Home / 21,430.50-32,145.74-9,747.06

Finding the Fourth Proportional to 21,430.50, 32,145.74 and 9,747.06

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Solution

The fourth proportional to 21,430.50, 32,145.74 and 9,747.06 is: 14,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.50 : 32,145.74 = 9,747.06 : x
  2. Step 2: Convert to fraction form
    21,430.50/32,145.74 = 9,747.06/x
  3. Step 3: Cross multiply
    21,430.50x = 32,145.74 × 9,747.06
  4. Step 4: Simplify right side
    21,430.50x = 313,326,456.52
  5. Step 5: Solve for x
    x = 313,326,456.52/21,430.50
  6. Step 6: Final answer
    x = 14,620.59

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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.