Home / 15,520.95-21,417.66-8,804.97

Finding the Fourth Proportional to 15,520.95, 21,417.66 and 8,804.97

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Solution

The fourth proportional to 15,520.95, 21,417.66 and 8,804.97 is: 12,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.95 : 21,417.66 = 8,804.97 : x
  2. Step 2: Convert to fraction form
    15,520.95/21,417.66 = 8,804.97/x
  3. Step 3: Cross multiply
    15,520.95x = 21,417.66 × 8,804.97
  4. Step 4: Simplify right side
    15,520.95x = 188,581,853.77
  5. Step 5: Solve for x
    x = 188,581,853.77/15,520.95
  6. Step 6: Final answer
    x = 12,150.15

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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.