Home / 21,274.52-31,856.02-15,000.55

Finding the Fourth Proportional to 21,274.52, 31,856.02 and 15,000.55

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Solution

The fourth proportional to 21,274.52, 31,856.02 and 15,000.55 is: 22,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.52 : 31,856.02 = 15,000.55 : x
  2. Step 2: Convert to fraction form
    21,274.52/31,856.02 = 15,000.55/x
  3. Step 3: Cross multiply
    21,274.52x = 31,856.02 × 15,000.55
  4. Step 4: Simplify right side
    21,274.52x = 477,857,703.67
  5. Step 5: Solve for x
    x = 477,857,703.67/21,274.52
  6. Step 6: Final answer
    x = 22,461.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.