Home / 31,690.70-47,542.40-11,700.32

Finding the Fourth Proportional to 31,690.70, 47,542.40 and 11,700.32

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Solution

The fourth proportional to 31,690.70, 47,542.40 and 11,700.32 is: 17,552.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.70 : 47,542.40 = 11,700.32 : x
  2. Step 2: Convert to fraction form
    31,690.70/47,542.40 = 11,700.32/x
  3. Step 3: Cross multiply
    31,690.70x = 47,542.40 × 11,700.32
  4. Step 4: Simplify right side
    31,690.70x = 556,260,997.35
  5. Step 5: Solve for x
    x = 556,260,997.35/31,690.70
  6. Step 6: Final answer
    x = 17,552.81

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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.