Home / 10,278.45-15,420.72-4,352.29

Finding the Fourth Proportional to 10,278.45, 15,420.72 and 4,352.29

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Solution

The fourth proportional to 10,278.45, 15,420.72 and 4,352.29 is: 6,529.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.45 : 15,420.72 = 4,352.29 : x
  2. Step 2: Convert to fraction form
    10,278.45/15,420.72 = 4,352.29/x
  3. Step 3: Cross multiply
    10,278.45x = 15,420.72 × 4,352.29
  4. Step 4: Simplify right side
    10,278.45x = 67,115,445.45
  5. Step 5: Solve for x
    x = 67,115,445.45/10,278.45
  6. Step 6: Final answer
    x = 6,529.72

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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.