Home / 19,947.60-29,921.40-12,074.40

Finding the Fourth Proportional to 19,947.60, 29,921.40 and 12,074.40

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Solution

The fourth proportional to 19,947.60, 29,921.40 and 12,074.40 is: 18,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.60 : 29,921.40 = 12,074.40 : x
  2. Step 2: Convert to fraction form
    19,947.60/29,921.40 = 12,074.40/x
  3. Step 3: Cross multiply
    19,947.60x = 29,921.40 × 12,074.40
  4. Step 4: Simplify right side
    19,947.60x = 361,282,952.16
  5. Step 5: Solve for x
    x = 361,282,952.16/19,947.60
  6. Step 6: Final answer
    x = 18,111.60

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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.