Home / 13,315.95-18,375.57-7,347.62

Finding the Fourth Proportional to 13,315.95, 18,375.57 and 7,347.62

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Solution

The fourth proportional to 13,315.95, 18,375.57 and 7,347.62 is: 10,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.95 : 18,375.57 = 7,347.62 : x
  2. Step 2: Convert to fraction form
    13,315.95/18,375.57 = 7,347.62/x
  3. Step 3: Cross multiply
    13,315.95x = 18,375.57 × 7,347.62
  4. Step 4: Simplify right side
    13,315.95x = 135,016,751.58
  5. Step 5: Solve for x
    x = 135,016,751.58/13,315.95
  6. Step 6: Final answer
    x = 10,139.48

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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.