Home / 15,506.50-21,398.97-8,789.98

Finding the Fourth Proportional to 15,506.50, 21,398.97 and 8,789.98

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Solution

The fourth proportional to 15,506.50, 21,398.97 and 8,789.98 is: 12,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.50 : 21,398.97 = 8,789.98 : x
  2. Step 2: Convert to fraction form
    15,506.50/21,398.97 = 8,789.98/x
  3. Step 3: Cross multiply
    15,506.50x = 21,398.97 × 8,789.98
  4. Step 4: Simplify right side
    15,506.50x = 188,096,518.32
  5. Step 5: Solve for x
    x = 188,096,518.32/15,506.50
  6. Step 6: Final answer
    x = 12,130.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.