Home / 21,478.17-29,572.52-19,509.87

Finding the Fourth Proportional to 21,478.17, 29,572.52 and 19,509.87

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Solution

The fourth proportional to 21,478.17, 29,572.52 and 19,509.87 is: 26,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.17 : 29,572.52 = 19,509.87 : x
  2. Step 2: Convert to fraction form
    21,478.17/29,572.52 = 19,509.87/x
  3. Step 3: Cross multiply
    21,478.17x = 29,572.52 × 19,509.87
  4. Step 4: Simplify right side
    21,478.17x = 576,955,923.22
  5. Step 5: Solve for x
    x = 576,955,923.22/21,478.17
  6. Step 6: Final answer
    x = 26,862.43

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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.