Home / 10,070.10-15,117.30-9,997.20

Finding the Fourth Proportional to 10,070.10, 15,117.30 and 9,997.20

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Solution

The fourth proportional to 10,070.10, 15,117.30 and 9,997.20 is: 15,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,070.10 : 15,117.30 = 9,997.20 : x
  2. Step 2: Convert to fraction form
    10,070.10/15,117.30 = 9,997.20/x
  3. Step 3: Cross multiply
    10,070.10x = 15,117.30 × 9,997.20
  4. Step 4: Simplify right side
    10,070.10x = 151,130,671.56
  5. Step 5: Solve for x
    x = 151,130,671.56/10,070.10
  6. Step 6: Final answer
    x = 15,007.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.