Home / 13,360.32-18,443.52-8,891.40

Finding the Fourth Proportional to 13,360.32, 18,443.52 and 8,891.40

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Solution

The fourth proportional to 13,360.32, 18,443.52 and 8,891.40 is: 12,274.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.32 : 18,443.52 = 8,891.40 : x
  2. Step 2: Convert to fraction form
    13,360.32/18,443.52 = 8,891.40/x
  3. Step 3: Cross multiply
    13,360.32x = 18,443.52 × 8,891.40
  4. Step 4: Simplify right side
    13,360.32x = 163,988,713.73
  5. Step 5: Solve for x
    x = 163,988,713.73/13,360.32
  6. Step 6: Final answer
    x = 12,274.31

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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.