Home / 10,430.20-15,646.66-3,407.76

Finding the Fourth Proportional to 10,430.20, 15,646.66 and 3,407.76

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Solution

The fourth proportional to 10,430.20, 15,646.66 and 3,407.76 is: 5,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.20 : 15,646.66 = 3,407.76 : x
  2. Step 2: Convert to fraction form
    10,430.20/15,646.66 = 3,407.76/x
  3. Step 3: Cross multiply
    10,430.20x = 15,646.66 × 3,407.76
  4. Step 4: Simplify right side
    10,430.20x = 53,320,062.08
  5. Step 5: Solve for x
    x = 53,320,062.08/10,430.20
  6. Step 6: Final answer
    x = 5,112.08

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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.