Home / 28,387.43-42,587.80-8,665.99

Finding the Fourth Proportional to 28,387.43, 42,587.80 and 8,665.99

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Solution

The fourth proportional to 28,387.43, 42,587.80 and 8,665.99 is: 13,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.43 : 42,587.80 = 8,665.99 : x
  2. Step 2: Convert to fraction form
    28,387.43/42,587.80 = 8,665.99/x
  3. Step 3: Cross multiply
    28,387.43x = 42,587.80 × 8,665.99
  4. Step 4: Simplify right side
    28,387.43x = 369,065,320.79
  5. Step 5: Solve for x
    x = 369,065,320.79/28,387.43
  6. Step 6: Final answer
    x = 13,001.01

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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.