Home / 28,451.16-39,264.30-15,875.64

Finding the Fourth Proportional to 28,451.16, 39,264.30 and 15,875.64

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Solution

The fourth proportional to 28,451.16, 39,264.30 and 15,875.64 is: 21,909.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.16 : 39,264.30 = 15,875.64 : x
  2. Step 2: Convert to fraction form
    28,451.16/39,264.30 = 15,875.64/x
  3. Step 3: Cross multiply
    28,451.16x = 39,264.30 × 15,875.64
  4. Step 4: Simplify right side
    28,451.16x = 623,345,891.65
  5. Step 5: Solve for x
    x = 623,345,891.65/28,451.16
  6. Step 6: Final answer
    x = 21,909.33

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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.