Home / 21,490.13-29,675.29-13,437.58

Finding the Fourth Proportional to 21,490.13, 29,675.29 and 13,437.58

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Solution

The fourth proportional to 21,490.13, 29,675.29 and 13,437.58 is: 18,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.13 : 29,675.29 = 13,437.58 : x
  2. Step 2: Convert to fraction form
    21,490.13/29,675.29 = 13,437.58/x
  3. Step 3: Cross multiply
    21,490.13x = 29,675.29 × 13,437.58
  4. Step 4: Simplify right side
    21,490.13x = 398,764,083.40
  5. Step 5: Solve for x
    x = 398,764,083.40/21,490.13
  6. Step 6: Final answer
    x = 18,555.69

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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.