Home / 10,305.60-15,436.80-5,683.20

Finding the Fourth Proportional to 10,305.60, 15,436.80 and 5,683.20

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Solution

The fourth proportional to 10,305.60, 15,436.80 and 5,683.20 is: 8,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.60 : 15,436.80 = 5,683.20 : x
  2. Step 2: Convert to fraction form
    10,305.60/15,436.80 = 5,683.20/x
  3. Step 3: Cross multiply
    10,305.60x = 15,436.80 × 5,683.20
  4. Step 4: Simplify right side
    10,305.60x = 87,730,421.76
  5. Step 5: Solve for x
    x = 87,730,421.76/10,305.60
  6. Step 6: Final answer
    x = 8,512.89

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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.