Home / 13,430.74-20,148.27-5,641.78

Finding the Fourth Proportional to 13,430.74, 20,148.27 and 5,641.78

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Solution

The fourth proportional to 13,430.74, 20,148.27 and 5,641.78 is: 8,463.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.74 : 20,148.27 = 5,641.78 : x
  2. Step 2: Convert to fraction form
    13,430.74/20,148.27 = 5,641.78/x
  3. Step 3: Cross multiply
    13,430.74x = 20,148.27 × 5,641.78
  4. Step 4: Simplify right side
    13,430.74x = 113,672,106.72
  5. Step 5: Solve for x
    x = 113,672,106.72/13,430.74
  6. Step 6: Final answer
    x = 8,463.58

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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.