Home / 15,328.20-21,151.08-8,613

Finding the Fourth Proportional to 15,328.20, 21,151.08 and 8,613

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Solution

The fourth proportional to 15,328.20, 21,151.08 and 8,613 is: 11,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.20 : 21,151.08 = 8,613 : x
  2. Step 2: Convert to fraction form
    15,328.20/21,151.08 = 8,613/x
  3. Step 3: Cross multiply
    15,328.20x = 21,151.08 × 8,613
  4. Step 4: Simplify right side
    15,328.20x = 182,174,252.04
  5. Step 5: Solve for x
    x = 182,174,252.04/15,328.20
  6. Step 6: Final answer
    x = 11,884.91

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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.