Home / 14,947.95-20,638.11-9,291.15

Finding the Fourth Proportional to 14,947.95, 20,638.11 and 9,291.15

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Solution

The fourth proportional to 14,947.95, 20,638.11 and 9,291.15 is: 12,827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,947.95 : 20,638.11 = 9,291.15 : x
  2. Step 2: Convert to fraction form
    14,947.95/20,638.11 = 9,291.15/x
  3. Step 3: Cross multiply
    14,947.95x = 20,638.11 × 9,291.15
  4. Step 4: Simplify right side
    14,947.95x = 191,751,775.73
  5. Step 5: Solve for x
    x = 191,751,775.73/14,947.95
  6. Step 6: Final answer
    x = 12,827.96

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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.