Home / 13,762.23-18,981.30-9,278.88

Finding the Fourth Proportional to 13,762.23, 18,981.30 and 9,278.88

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Solution

The fourth proportional to 13,762.23, 18,981.30 and 9,278.88 is: 12,797.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.23 : 18,981.30 = 9,278.88 : x
  2. Step 2: Convert to fraction form
    13,762.23/18,981.30 = 9,278.88/x
  3. Step 3: Cross multiply
    13,762.23x = 18,981.30 × 9,278.88
  4. Step 4: Simplify right side
    13,762.23x = 176,125,110.04
  5. Step 5: Solve for x
    x = 176,125,110.04/13,762.23
  6. Step 6: Final answer
    x = 12,797.72

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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.