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Finding the Fourth Proportional to 28,956.66, 39,962.13 and 16,210.98

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Solution

The fourth proportional to 28,956.66, 39,962.13 and 16,210.98 is: 22,372.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,956.66 : 39,962.13 = 16,210.98 : x
  2. Step 2: Convert to fraction form
    28,956.66/39,962.13 = 16,210.98/x
  3. Step 3: Cross multiply
    28,956.66x = 39,962.13 × 16,210.98
  4. Step 4: Simplify right side
    28,956.66x = 647,825,290.19
  5. Step 5: Solve for x
    x = 647,825,290.19/28,956.66
  6. Step 6: Final answer
    x = 22,372.24

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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.