Home / 13,363.60-20,045.40-5,155.60

Finding the Fourth Proportional to 13,363.60, 20,045.40 and 5,155.60

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Solution

The fourth proportional to 13,363.60, 20,045.40 and 5,155.60 is: 7,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.60 : 20,045.40 = 5,155.60 : x
  2. Step 2: Convert to fraction form
    13,363.60/20,045.40 = 5,155.60/x
  3. Step 3: Cross multiply
    13,363.60x = 20,045.40 × 5,155.60
  4. Step 4: Simplify right side
    13,363.60x = 103,346,064.24
  5. Step 5: Solve for x
    x = 103,346,064.24/13,363.60
  6. Step 6: Final answer
    x = 7,733.40

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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.