Home / 13,240.50-18,272.40-7,272.42

Finding the Fourth Proportional to 13,240.50, 18,272.40 and 7,272.42

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Solution

The fourth proportional to 13,240.50, 18,272.40 and 7,272.42 is: 10,036.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.50 : 18,272.40 = 7,272.42 : x
  2. Step 2: Convert to fraction form
    13,240.50/18,272.40 = 7,272.42/x
  3. Step 3: Cross multiply
    13,240.50x = 18,272.40 × 7,272.42
  4. Step 4: Simplify right side
    13,240.50x = 132,884,567.21
  5. Step 5: Solve for x
    x = 132,884,567.21/13,240.50
  6. Step 6: Final answer
    x = 10,036.22

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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.