Home / 28,451.52-39,261.51-15,877.08

Finding the Fourth Proportional to 28,451.52, 39,261.51 and 15,877.08

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Solution

The fourth proportional to 28,451.52, 39,261.51 and 15,877.08 is: 21,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.52 : 39,261.51 = 15,877.08 : x
  2. Step 2: Convert to fraction form
    28,451.52/39,261.51 = 15,877.08/x
  3. Step 3: Cross multiply
    28,451.52x = 39,261.51 × 15,877.08
  4. Step 4: Simplify right side
    28,451.52x = 623,358,135.19
  5. Step 5: Solve for x
    x = 623,358,135.19/28,451.52
  6. Step 6: Final answer
    x = 21,909.48

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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.