Home / 21,068.64-31,598.52-13,549.68

Finding the Fourth Proportional to 21,068.64, 31,598.52 and 13,549.68

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Solution

The fourth proportional to 21,068.64, 31,598.52 and 13,549.68 is: 20,321.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.64 : 31,598.52 = 13,549.68 : x
  2. Step 2: Convert to fraction form
    21,068.64/31,598.52 = 13,549.68/x
  3. Step 3: Cross multiply
    21,068.64x = 31,598.52 × 13,549.68
  4. Step 4: Simplify right side
    21,068.64x = 428,149,834.47
  5. Step 5: Solve for x
    x = 428,149,834.47/21,068.64
  6. Step 6: Final answer
    x = 20,321.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.