Home / 15,320.79-22,969.50-7,920.53

Finding the Fourth Proportional to 15,320.79, 22,969.50 and 7,920.53

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Solution

The fourth proportional to 15,320.79, 22,969.50 and 7,920.53 is: 11,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.79 : 22,969.50 = 7,920.53 : x
  2. Step 2: Convert to fraction form
    15,320.79/22,969.50 = 7,920.53/x
  3. Step 3: Cross multiply
    15,320.79x = 22,969.50 × 7,920.53
  4. Step 4: Simplify right side
    15,320.79x = 181,930,546.51
  5. Step 5: Solve for x
    x = 181,930,546.51/15,320.79
  6. Step 6: Final answer
    x = 11,874.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.