Home / 15,417.44-23,138.32-7,920.70

Finding the Fourth Proportional to 15,417.44, 23,138.32 and 7,920.70

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Solution

The fourth proportional to 15,417.44, 23,138.32 and 7,920.70 is: 11,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.44 : 23,138.32 = 7,920.70 : x
  2. Step 2: Convert to fraction form
    15,417.44/23,138.32 = 7,920.70/x
  3. Step 3: Cross multiply
    15,417.44x = 23,138.32 × 7,920.70
  4. Step 4: Simplify right side
    15,417.44x = 183,271,691.22
  5. Step 5: Solve for x
    x = 183,271,691.22/15,417.44
  6. Step 6: Final answer
    x = 11,887.30

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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.