Home / 15,834.30-21,851.55-9,868.38

Finding the Fourth Proportional to 15,834.30, 21,851.55 and 9,868.38

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Solution

The fourth proportional to 15,834.30, 21,851.55 and 9,868.38 is: 13,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,834.30 : 21,851.55 = 9,868.38 : x
  2. Step 2: Convert to fraction form
    15,834.30/21,851.55 = 9,868.38/x
  3. Step 3: Cross multiply
    15,834.30x = 21,851.55 × 9,868.38
  4. Step 4: Simplify right side
    15,834.30x = 215,639,398.99
  5. Step 5: Solve for x
    x = 215,639,398.99/15,834.30
  6. Step 6: Final answer
    x = 13,618.50

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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.