Home / 21,355.32-29,422.38-14,888.95

Finding the Fourth Proportional to 21,355.32, 29,422.38 and 14,888.95

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Solution

The fourth proportional to 21,355.32, 29,422.38 and 14,888.95 is: 20,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.32 : 29,422.38 = 14,888.95 : x
  2. Step 2: Convert to fraction form
    21,355.32/29,422.38 = 14,888.95/x
  3. Step 3: Cross multiply
    21,355.32x = 29,422.38 × 14,888.95
  4. Step 4: Simplify right side
    21,355.32x = 438,068,344.70
  5. Step 5: Solve for x
    x = 438,068,344.70/21,355.32
  6. Step 6: Final answer
    x = 20,513.32

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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.