Home / 21,276.28-29,352.18-14,903.56

Finding the Fourth Proportional to 21,276.28, 29,352.18 and 14,903.56

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Solution

The fourth proportional to 21,276.28, 29,352.18 and 14,903.56 is: 20,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.28 : 29,352.18 = 14,903.56 : x
  2. Step 2: Convert to fraction form
    21,276.28/29,352.18 = 14,903.56/x
  3. Step 3: Cross multiply
    21,276.28x = 29,352.18 × 14,903.56
  4. Step 4: Simplify right side
    21,276.28x = 437,451,975.76
  5. Step 5: Solve for x
    x = 437,451,975.76/21,276.28
  6. Step 6: Final answer
    x = 20,560.55

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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.