Home / 28,454.52-39,265.65-15,880.08

Finding the Fourth Proportional to 28,454.52, 39,265.65 and 15,880.08

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Solution

The fourth proportional to 28,454.52, 39,265.65 and 15,880.08 is: 21,913.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.52 : 39,265.65 = 15,880.08 : x
  2. Step 2: Convert to fraction form
    28,454.52/39,265.65 = 15,880.08/x
  3. Step 3: Cross multiply
    28,454.52x = 39,265.65 × 15,880.08
  4. Step 4: Simplify right side
    28,454.52x = 623,541,663.25
  5. Step 5: Solve for x
    x = 623,541,663.25/28,454.52
  6. Step 6: Final answer
    x = 21,913.62

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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.