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Finding the Fourth Proportional to 15,312.19, 22,974.79 and 7,420.58

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Solution

The fourth proportional to 15,312.19, 22,974.79 and 7,420.58 is: 11,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.19 : 22,974.79 = 7,420.58 : x
  2. Step 2: Convert to fraction form
    15,312.19/22,974.79 = 7,420.58/x
  3. Step 3: Cross multiply
    15,312.19x = 22,974.79 × 7,420.58
  4. Step 4: Simplify right side
    15,312.19x = 170,486,249.07
  5. Step 5: Solve for x
    x = 170,486,249.07/15,312.19
  6. Step 6: Final answer
    x = 11,134.02

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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.