Home / 15,188.32-20,939.04-10,153.36

Finding the Fourth Proportional to 15,188.32, 20,939.04 and 10,153.36

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Solution

The fourth proportional to 15,188.32, 20,939.04 and 10,153.36 is: 13,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.32 : 20,939.04 = 10,153.36 : x
  2. Step 2: Convert to fraction form
    15,188.32/20,939.04 = 10,153.36/x
  3. Step 3: Cross multiply
    15,188.32x = 20,939.04 × 10,153.36
  4. Step 4: Simplify right side
    15,188.32x = 212,601,611.17
  5. Step 5: Solve for x
    x = 212,601,611.17/15,188.32
  6. Step 6: Final answer
    x = 13,997.70

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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.