Home / 39,770.60-59,631.80-18,715.05

Finding the Fourth Proportional to 39,770.60, 59,631.80 and 18,715.05

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Solution

The fourth proportional to 39,770.60, 59,631.80 and 18,715.05 is: 28,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.60 : 59,631.80 = 18,715.05 : x
  2. Step 2: Convert to fraction form
    39,770.60/59,631.80 = 18,715.05/x
  3. Step 3: Cross multiply
    39,770.60x = 59,631.80 × 18,715.05
  4. Step 4: Simplify right side
    39,770.60x = 1,116,012,025.01
  5. Step 5: Solve for x
    x = 1,116,012,025.01/39,770.60
  6. Step 6: Final answer
    x = 28,061.24

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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.