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Finding the Fourth Proportional to 14,565.80, 21,848.70 and 9,900.20

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Solution

The fourth proportional to 14,565.80, 21,848.70 and 9,900.20 is: 14,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,565.80 : 21,848.70 = 9,900.20 : x
  2. Step 2: Convert to fraction form
    14,565.80/21,848.70 = 9,900.20/x
  3. Step 3: Cross multiply
    14,565.80x = 21,848.70 × 9,900.20
  4. Step 4: Simplify right side
    14,565.80x = 216,306,499.74
  5. Step 5: Solve for x
    x = 216,306,499.74/14,565.80
  6. Step 6: Final answer
    x = 14,850.30

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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.