Home / 15,683.92-21,644.48-9,314.28

Finding the Fourth Proportional to 15,683.92, 21,644.48 and 9,314.28

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Solution

The fourth proportional to 15,683.92, 21,644.48 and 9,314.28 is: 12,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.92 : 21,644.48 = 9,314.28 : x
  2. Step 2: Convert to fraction form
    15,683.92/21,644.48 = 9,314.28/x
  3. Step 3: Cross multiply
    15,683.92x = 21,644.48 × 9,314.28
  4. Step 4: Simplify right side
    15,683.92x = 201,602,747.17
  5. Step 5: Solve for x
    x = 201,602,747.17/15,683.92
  6. Step 6: Final answer
    x = 12,854.10

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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.