Home / 42,729.68-64,089.66-11,567.36

Finding the Fourth Proportional to 42,729.68, 64,089.66 and 11,567.36

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Solution

The fourth proportional to 42,729.68, 64,089.66 and 11,567.36 is: 17,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.68 : 64,089.66 = 11,567.36 : x
  2. Step 2: Convert to fraction form
    42,729.68/64,089.66 = 11,567.36/x
  3. Step 3: Cross multiply
    42,729.68x = 64,089.66 × 11,567.36
  4. Step 4: Simplify right side
    42,729.68x = 741,348,169.50
  5. Step 5: Solve for x
    x = 741,348,169.50/42,729.68
  6. Step 6: Final answer
    x = 17,349.72

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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.