Home / 15,875.60-21,858.44-13,480.54

Finding the Fourth Proportional to 15,875.60, 21,858.44 and 13,480.54

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Solution

The fourth proportional to 15,875.60, 21,858.44 and 13,480.54 is: 18,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.60 : 21,858.44 = 13,480.54 : x
  2. Step 2: Convert to fraction form
    15,875.60/21,858.44 = 13,480.54/x
  3. Step 3: Cross multiply
    15,875.60x = 21,858.44 × 13,480.54
  4. Step 4: Simplify right side
    15,875.60x = 294,663,452.71
  5. Step 5: Solve for x
    x = 294,663,452.71/15,875.60
  6. Step 6: Final answer
    x = 18,560.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.