Home / 13,488.56-20,222.28-8,557.28

Finding the Fourth Proportional to 13,488.56, 20,222.28 and 8,557.28

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Solution

The fourth proportional to 13,488.56, 20,222.28 and 8,557.28 is: 12,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.56 : 20,222.28 = 8,557.28 : x
  2. Step 2: Convert to fraction form
    13,488.56/20,222.28 = 8,557.28/x
  3. Step 3: Cross multiply
    13,488.56x = 20,222.28 × 8,557.28
  4. Step 4: Simplify right side
    13,488.56x = 173,047,712.20
  5. Step 5: Solve for x
    x = 173,047,712.20/13,488.56
  6. Step 6: Final answer
    x = 12,829.22

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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.