Home / 15,261.32-21,061.14-8,974.28

Finding the Fourth Proportional to 15,261.32, 21,061.14 and 8,974.28

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Solution

The fourth proportional to 15,261.32, 21,061.14 and 8,974.28 is: 12,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.32 : 21,061.14 = 8,974.28 : x
  2. Step 2: Convert to fraction form
    15,261.32/21,061.14 = 8,974.28/x
  3. Step 3: Cross multiply
    15,261.32x = 21,061.14 × 8,974.28
  4. Step 4: Simplify right side
    15,261.32x = 189,008,567.48
  5. Step 5: Solve for x
    x = 189,008,567.48/15,261.32
  6. Step 6: Final answer
    x = 12,384.81

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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.