Home / 13,262.40-18,316.80-9,007.20

Finding the Fourth Proportional to 13,262.40, 18,316.80 and 9,007.20

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Solution

The fourth proportional to 13,262.40, 18,316.80 and 9,007.20 is: 12,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262.40 : 18,316.80 = 9,007.20 : x
  2. Step 2: Convert to fraction form
    13,262.40/18,316.80 = 9,007.20/x
  3. Step 3: Cross multiply
    13,262.40x = 18,316.80 × 9,007.20
  4. Step 4: Simplify right side
    13,262.40x = 164,983,080.96
  5. Step 5: Solve for x
    x = 164,983,080.96/13,262.40
  6. Step 6: Final answer
    x = 12,439.91

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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.