Home / 52,687.20-79,030.80-13,245.60

Finding the Fourth Proportional to 52,687.20, 79,030.80 and 13,245.60

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Solution

The fourth proportional to 52,687.20, 79,030.80 and 13,245.60 is: 19,868.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,687.20 : 79,030.80 = 13,245.60 : x
  2. Step 2: Convert to fraction form
    52,687.20/79,030.80 = 13,245.60/x
  3. Step 3: Cross multiply
    52,687.20x = 79,030.80 × 13,245.60
  4. Step 4: Simplify right side
    52,687.20x = 1,046,810,364.48
  5. Step 5: Solve for x
    x = 1,046,810,364.48/52,687.20
  6. Step 6: Final answer
    x = 19,868.40

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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.