Home / 15,088.40-20,820.92-8,374.32

Finding the Fourth Proportional to 15,088.40, 20,820.92 and 8,374.32

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Solution

The fourth proportional to 15,088.40, 20,820.92 and 8,374.32 is: 11,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.40 : 20,820.92 = 8,374.32 : x
  2. Step 2: Convert to fraction form
    15,088.40/20,820.92 = 8,374.32/x
  3. Step 3: Cross multiply
    15,088.40x = 20,820.92 × 8,374.32
  4. Step 4: Simplify right side
    15,088.40x = 174,361,046.77
  5. Step 5: Solve for x
    x = 174,361,046.77/15,088.40
  6. Step 6: Final answer
    x = 11,555.97

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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.