Home / 15,502.41-21,393.75-8,787.76

Finding the Fourth Proportional to 15,502.41, 21,393.75 and 8,787.76

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Solution

The fourth proportional to 15,502.41, 21,393.75 and 8,787.76 is: 12,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.41 : 21,393.75 = 8,787.76 : x
  2. Step 2: Convert to fraction form
    15,502.41/21,393.75 = 8,787.76/x
  3. Step 3: Cross multiply
    15,502.41x = 21,393.75 × 8,787.76
  4. Step 4: Simplify right side
    15,502.41x = 188,003,140.50
  5. Step 5: Solve for x
    x = 188,003,140.50/15,502.41
  6. Step 6: Final answer
    x = 12,127.35

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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.