Home / 12,865.76-19,301.20-5,470.16

Finding the Fourth Proportional to 12,865.76, 19,301.20 and 5,470.16

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Solution

The fourth proportional to 12,865.76, 19,301.20 and 5,470.16 is: 8,206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.76 : 19,301.20 = 5,470.16 : x
  2. Step 2: Convert to fraction form
    12,865.76/19,301.20 = 5,470.16/x
  3. Step 3: Cross multiply
    12,865.76x = 19,301.20 × 5,470.16
  4. Step 4: Simplify right side
    12,865.76x = 105,580,652.19
  5. Step 5: Solve for x
    x = 105,580,652.19/12,865.76
  6. Step 6: Final answer
    x = 8,206.33

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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.