Home / 28,412.60-42,632.97-20,897.62

Finding the Fourth Proportional to 28,412.60, 42,632.97 and 20,897.62

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Solution

The fourth proportional to 28,412.60, 42,632.97 and 20,897.62 is: 31,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.60 : 42,632.97 = 20,897.62 : x
  2. Step 2: Convert to fraction form
    28,412.60/42,632.97 = 20,897.62/x
  3. Step 3: Cross multiply
    28,412.60x = 42,632.97 × 20,897.62
  4. Step 4: Simplify right side
    28,412.60x = 890,927,606.53
  5. Step 5: Solve for x
    x = 890,927,606.53/28,412.60
  6. Step 6: Final answer
    x = 31,356.78

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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.