Home / 15,640.49-21,580.53-9,269.08

Finding the Fourth Proportional to 15,640.49, 21,580.53 and 9,269.08

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Solution

The fourth proportional to 15,640.49, 21,580.53 and 9,269.08 is: 12,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.49 : 21,580.53 = 9,269.08 : x
  2. Step 2: Convert to fraction form
    15,640.49/21,580.53 = 9,269.08/x
  3. Step 3: Cross multiply
    15,640.49x = 21,580.53 × 9,269.08
  4. Step 4: Simplify right side
    15,640.49x = 200,031,691.69
  5. Step 5: Solve for x
    x = 200,031,691.69/15,640.49
  6. Step 6: Final answer
    x = 12,789.35

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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.