Home / 19,945.60-29,865.60-15,978.40

Finding the Fourth Proportional to 19,945.60, 29,865.60 and 15,978.40

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Solution

The fourth proportional to 19,945.60, 29,865.60 and 15,978.40 is: 23,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.60 : 29,865.60 = 15,978.40 : x
  2. Step 2: Convert to fraction form
    19,945.60/29,865.60 = 15,978.40/x
  3. Step 3: Cross multiply
    19,945.60x = 29,865.60 × 15,978.40
  4. Step 4: Simplify right side
    19,945.60x = 477,204,503.04
  5. Step 5: Solve for x
    x = 477,204,503.04/19,945.60
  6. Step 6: Final answer
    x = 23,925.30

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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.