Home / 10,430.38-15,645.58-3,509.74

Finding the Fourth Proportional to 10,430.38, 15,645.58 and 3,509.74

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Solution

The fourth proportional to 10,430.38, 15,645.58 and 3,509.74 is: 5,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.38 : 15,645.58 = 3,509.74 : x
  2. Step 2: Convert to fraction form
    10,430.38/15,645.58 = 3,509.74/x
  3. Step 3: Cross multiply
    10,430.38x = 15,645.58 × 3,509.74
  4. Step 4: Simplify right side
    10,430.38x = 54,911,917.95
  5. Step 5: Solve for x
    x = 54,911,917.95/10,430.38
  6. Step 6: Final answer
    x = 5,264.61

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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.