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Finding the Fourth Proportional to 12,955.35, 19,432.98 and 5,555.01

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Solution

The fourth proportional to 12,955.35, 19,432.98 and 5,555.01 is: 8,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.35 : 19,432.98 = 5,555.01 : x
  2. Step 2: Convert to fraction form
    12,955.35/19,432.98 = 5,555.01/x
  3. Step 3: Cross multiply
    12,955.35x = 19,432.98 × 5,555.01
  4. Step 4: Simplify right side
    12,955.35x = 107,950,398.23
  5. Step 5: Solve for x
    x = 107,950,398.23/12,955.35
  6. Step 6: Final answer
    x = 8,332.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.