Home / 42,747.50-64,121.23-11,582.75

Finding the Fourth Proportional to 42,747.50, 64,121.23 and 11,582.75

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Solution

The fourth proportional to 42,747.50, 64,121.23 and 11,582.75 is: 17,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.50 : 64,121.23 = 11,582.75 : x
  2. Step 2: Convert to fraction form
    42,747.50/64,121.23 = 11,582.75/x
  3. Step 3: Cross multiply
    42,747.50x = 64,121.23 × 11,582.75
  4. Step 4: Simplify right side
    42,747.50x = 742,699,798.26
  5. Step 5: Solve for x
    x = 742,699,798.26/42,747.50
  6. Step 6: Final answer
    x = 17,374.11

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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.