Home / 14,440.32-19,930.80-9,142.20

Finding the Fourth Proportional to 14,440.32, 19,930.80 and 9,142.20

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Solution

The fourth proportional to 14,440.32, 19,930.80 and 9,142.20 is: 12,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,440.32 : 19,930.80 = 9,142.20 : x
  2. Step 2: Convert to fraction form
    14,440.32/19,930.80 = 9,142.20/x
  3. Step 3: Cross multiply
    14,440.32x = 19,930.80 × 9,142.20
  4. Step 4: Simplify right side
    14,440.32x = 182,211,359.76
  5. Step 5: Solve for x
    x = 182,211,359.76/14,440.32
  6. Step 6: Final answer
    x = 12,618.24

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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.