Home / 28,725.52-39,643.61-15,981.10

Finding the Fourth Proportional to 28,725.52, 39,643.61 and 15,981.10

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Solution

The fourth proportional to 28,725.52, 39,643.61 and 15,981.10 is: 22,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.52 : 39,643.61 = 15,981.10 : x
  2. Step 2: Convert to fraction form
    28,725.52/39,643.61 = 15,981.10/x
  3. Step 3: Cross multiply
    28,725.52x = 39,643.61 × 15,981.10
  4. Step 4: Simplify right side
    28,725.52x = 633,548,473.20
  5. Step 5: Solve for x
    x = 633,548,473.20/28,725.52
  6. Step 6: Final answer
    x = 22,055.25

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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.