Home / 21,655.76-29,898.72-17,686.35

Finding the Fourth Proportional to 21,655.76, 29,898.72 and 17,686.35

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Solution

The fourth proportional to 21,655.76, 29,898.72 and 17,686.35 is: 24,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.76 : 29,898.72 = 17,686.35 : x
  2. Step 2: Convert to fraction form
    21,655.76/29,898.72 = 17,686.35/x
  3. Step 3: Cross multiply
    21,655.76x = 29,898.72 × 17,686.35
  4. Step 4: Simplify right side
    21,655.76x = 528,799,226.47
  5. Step 5: Solve for x
    x = 528,799,226.47/21,655.76
  6. Step 6: Final answer
    x = 24,418.42

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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.