Home / 20,374.95-28,117.41-11,422.46

Finding the Fourth Proportional to 20,374.95, 28,117.41 and 11,422.46

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Solution

The fourth proportional to 20,374.95, 28,117.41 and 11,422.46 is: 15,762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.95 : 28,117.41 = 11,422.46 : x
  2. Step 2: Convert to fraction form
    20,374.95/28,117.41 = 11,422.46/x
  3. Step 3: Cross multiply
    20,374.95x = 28,117.41 × 11,422.46
  4. Step 4: Simplify right side
    20,374.95x = 321,169,956.70
  5. Step 5: Solve for x
    x = 321,169,956.70/20,374.95
  6. Step 6: Final answer
    x = 15,762.98

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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.