Home / 34,248.12-47,264.22-20,817.20

Finding the Fourth Proportional to 34,248.12, 47,264.22 and 20,817.20

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Solution

The fourth proportional to 34,248.12, 47,264.22 and 20,817.20 is: 28,728.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,248.12 : 47,264.22 = 20,817.20 : x
  2. Step 2: Convert to fraction form
    34,248.12/47,264.22 = 20,817.20/x
  3. Step 3: Cross multiply
    34,248.12x = 47,264.22 × 20,817.20
  4. Step 4: Simplify right side
    34,248.12x = 983,908,720.58
  5. Step 5: Solve for x
    x = 983,908,720.58/34,248.12
  6. Step 6: Final answer
    x = 28,728.84

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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.