Home / 12,861.90-19,278.45-5,465.10

Finding the Fourth Proportional to 12,861.90, 19,278.45 and 5,465.10

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Solution

The fourth proportional to 12,861.90, 19,278.45 and 5,465.10 is: 8,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.90 : 19,278.45 = 5,465.10 : x
  2. Step 2: Convert to fraction form
    12,861.90/19,278.45 = 5,465.10/x
  3. Step 3: Cross multiply
    12,861.90x = 19,278.45 × 5,465.10
  4. Step 4: Simplify right side
    12,861.90x = 105,358,657.10
  5. Step 5: Solve for x
    x = 105,358,657.10/12,861.90
  6. Step 6: Final answer
    x = 8,191.53

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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.