Home / 15,389.74-21,237.85-8,316.15

Finding the Fourth Proportional to 15,389.74, 21,237.85 and 8,316.15

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Solution

The fourth proportional to 15,389.74, 21,237.85 and 8,316.15 is: 11,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.74 : 21,237.85 = 8,316.15 : x
  2. Step 2: Convert to fraction form
    15,389.74/21,237.85 = 8,316.15/x
  3. Step 3: Cross multiply
    15,389.74x = 21,237.85 × 8,316.15
  4. Step 4: Simplify right side
    15,389.74x = 176,617,146.28
  5. Step 5: Solve for x
    x = 176,617,146.28/15,389.74
  6. Step 6: Final answer
    x = 11,476.29

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Similar ratio
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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.