Home / 21,700.12-29,937.30-14,143.68

Finding the Fourth Proportional to 21,700.12, 29,937.30 and 14,143.68

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Solution

The fourth proportional to 21,700.12, 29,937.30 and 14,143.68 is: 19,512.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.12 : 29,937.30 = 14,143.68 : x
  2. Step 2: Convert to fraction form
    21,700.12/29,937.30 = 14,143.68/x
  3. Step 3: Cross multiply
    21,700.12x = 29,937.30 × 14,143.68
  4. Step 4: Simplify right side
    21,700.12x = 423,423,591.26
  5. Step 5: Solve for x
    x = 423,423,591.26/21,700.12
  6. Step 6: Final answer
    x = 19,512.50

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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.