Home / 13,240.89-18,272.75-7,272.63

Finding the Fourth Proportional to 13,240.89, 18,272.75 and 7,272.63

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Solution

The fourth proportional to 13,240.89, 18,272.75 and 7,272.63 is: 10,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.89 : 18,272.75 = 7,272.63 : x
  2. Step 2: Convert to fraction form
    13,240.89/18,272.75 = 7,272.63/x
  3. Step 3: Cross multiply
    13,240.89x = 18,272.75 × 7,272.63
  4. Step 4: Simplify right side
    13,240.89x = 132,890,913.47
  5. Step 5: Solve for x
    x = 132,890,913.47/13,240.89
  6. Step 6: Final answer
    x = 10,036.40

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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.