Home / 28,387.80-42,587.64-9,666.36

Finding the Fourth Proportional to 28,387.80, 42,587.64 and 9,666.36

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Solution

The fourth proportional to 28,387.80, 42,587.64 and 9,666.36 is: 14,501.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.80 : 42,587.64 = 9,666.36 : x
  2. Step 2: Convert to fraction form
    28,387.80/42,587.64 = 9,666.36/x
  3. Step 3: Cross multiply
    28,387.80x = 42,587.64 × 9,666.36
  4. Step 4: Simplify right side
    28,387.80x = 411,667,459.79
  5. Step 5: Solve for x
    x = 411,667,459.79/28,387.80
  6. Step 6: Final answer
    x = 14,501.56

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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.