Home / 14,980.16-20,663.45-9,600.78

Finding the Fourth Proportional to 14,980.16, 20,663.45 and 9,600.78

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Solution

The fourth proportional to 14,980.16, 20,663.45 and 9,600.78 is: 13,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.16 : 20,663.45 = 9,600.78 : x
  2. Step 2: Convert to fraction form
    14,980.16/20,663.45 = 9,600.78/x
  3. Step 3: Cross multiply
    14,980.16x = 20,663.45 × 9,600.78
  4. Step 4: Simplify right side
    14,980.16x = 198,385,189.49
  5. Step 5: Solve for x
    x = 198,385,189.49/14,980.16
  6. Step 6: Final answer
    x = 13,243.20

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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.