Home / 9,937.20-14,889.60-7,312.80

Finding the Fourth Proportional to 9,937.20, 14,889.60 and 7,312.80

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Solution

The fourth proportional to 9,937.20, 14,889.60 and 7,312.80 is: 10,957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,937.20 : 14,889.60 = 7,312.80 : x
  2. Step 2: Convert to fraction form
    9,937.20/14,889.60 = 7,312.80/x
  3. Step 3: Cross multiply
    9,937.20x = 14,889.60 × 7,312.80
  4. Step 4: Simplify right side
    9,937.20x = 108,884,666.88
  5. Step 5: Solve for x
    x = 108,884,666.88/9,937.20
  6. Step 6: Final answer
    x = 10,957.28

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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.