Home / 13,320.61-18,381.67-7,352.28

Finding the Fourth Proportional to 13,320.61, 18,381.67 and 7,352.28

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Solution

The fourth proportional to 13,320.61, 18,381.67 and 7,352.28 is: 10,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.61 : 18,381.67 = 7,352.28 : x
  2. Step 2: Convert to fraction form
    13,320.61/18,381.67 = 7,352.28/x
  3. Step 3: Cross multiply
    13,320.61x = 18,381.67 × 7,352.28
  4. Step 4: Simplify right side
    13,320.61x = 135,147,184.71
  5. Step 5: Solve for x
    x = 135,147,184.71/13,320.61
  6. Step 6: Final answer
    x = 10,145.72

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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.