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Finding the Fourth Proportional to 14,871.70, 22,319.70 and 14,385.70

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Solution

The fourth proportional to 14,871.70, 22,319.70 and 14,385.70 is: 21,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,871.70 : 22,319.70 = 14,385.70 : x
  2. Step 2: Convert to fraction form
    14,871.70/22,319.70 = 14,385.70/x
  3. Step 3: Cross multiply
    14,871.70x = 22,319.70 × 14,385.70
  4. Step 4: Simplify right side
    14,871.70x = 321,084,508.29
  5. Step 5: Solve for x
    x = 321,084,508.29/14,871.70
  6. Step 6: Final answer
    x = 21,590.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.