Home / 28,257.12-38,995.02-15,681.87

Finding the Fourth Proportional to 28,257.12, 38,995.02 and 15,681.87

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Solution

The fourth proportional to 28,257.12, 38,995.02 and 15,681.87 is: 21,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.12 : 38,995.02 = 15,681.87 : x
  2. Step 2: Convert to fraction form
    28,257.12/38,995.02 = 15,681.87/x
  3. Step 3: Cross multiply
    28,257.12x = 38,995.02 × 15,681.87
  4. Step 4: Simplify right side
    28,257.12x = 611,514,834.29
  5. Step 5: Solve for x
    x = 611,514,834.29/28,257.12
  6. Step 6: Final answer
    x = 21,641.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.