Home / 20,951.61-28,889.55-15,276.35

Finding the Fourth Proportional to 20,951.61, 28,889.55 and 15,276.35

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Solution

The fourth proportional to 20,951.61, 28,889.55 and 15,276.35 is: 21,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.61 : 28,889.55 = 15,276.35 : x
  2. Step 2: Convert to fraction form
    20,951.61/28,889.55 = 15,276.35/x
  3. Step 3: Cross multiply
    20,951.61x = 28,889.55 × 15,276.35
  4. Step 4: Simplify right side
    20,951.61x = 441,326,732.69
  5. Step 5: Solve for x
    x = 441,326,732.69/20,951.61
  6. Step 6: Final answer
    x = 21,064.10

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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.