Home / 13,569.80-20,354.59-8,919.18

Finding the Fourth Proportional to 13,569.80, 20,354.59 and 8,919.18

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Solution

The fourth proportional to 13,569.80, 20,354.59 and 8,919.18 is: 13,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.80 : 20,354.59 = 8,919.18 : x
  2. Step 2: Convert to fraction form
    13,569.80/20,354.59 = 8,919.18/x
  3. Step 3: Cross multiply
    13,569.80x = 20,354.59 × 8,919.18
  4. Step 4: Simplify right side
    13,569.80x = 181,546,263.19
  5. Step 5: Solve for x
    x = 181,546,263.19/13,569.80
  6. Step 6: Final answer
    x = 13,378.70

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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.