Home / 12,518.40-17,272.80-9,528.96

Finding the Fourth Proportional to 12,518.40, 17,272.80 and 9,528.96

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Solution

The fourth proportional to 12,518.40, 17,272.80 and 9,528.96 is: 13,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.40 : 17,272.80 = 9,528.96 : x
  2. Step 2: Convert to fraction form
    12,518.40/17,272.80 = 9,528.96/x
  3. Step 3: Cross multiply
    12,518.40x = 17,272.80 × 9,528.96
  4. Step 4: Simplify right side
    12,518.40x = 164,591,820.29
  5. Step 5: Solve for x
    x = 164,591,820.29/12,518.40
  6. Step 6: Final answer
    x = 13,147.99

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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.