Home / 12,220.32-18,331.20-5,295.36

Finding the Fourth Proportional to 12,220.32, 18,331.20 and 5,295.36

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Solution

The fourth proportional to 12,220.32, 18,331.20 and 5,295.36 is: 7,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.32 : 18,331.20 = 5,295.36 : x
  2. Step 2: Convert to fraction form
    12,220.32/18,331.20 = 5,295.36/x
  3. Step 3: Cross multiply
    12,220.32x = 18,331.20 × 5,295.36
  4. Step 4: Simplify right side
    12,220.32x = 97,070,303.23
  5. Step 5: Solve for x
    x = 97,070,303.23/12,220.32
  6. Step 6: Final answer
    x = 7,943.35

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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.