Home / 31,440.16-47,157.36-10,661.28

Finding the Fourth Proportional to 31,440.16, 47,157.36 and 10,661.28

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Solution

The fourth proportional to 31,440.16, 47,157.36 and 10,661.28 is: 15,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.16 : 47,157.36 = 10,661.28 : x
  2. Step 2: Convert to fraction form
    31,440.16/47,157.36 = 10,661.28/x
  3. Step 3: Cross multiply
    31,440.16x = 47,157.36 × 10,661.28
  4. Step 4: Simplify right side
    31,440.16x = 502,757,819.02
  5. Step 5: Solve for x
    x = 502,757,819.02/31,440.16
  6. Step 6: Final answer
    x = 15,990.94

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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.