Home / 34,178.80-51,268.20-20,988.40

Finding the Fourth Proportional to 34,178.80, 51,268.20 and 20,988.40

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Solution

The fourth proportional to 34,178.80, 51,268.20 and 20,988.40 is: 31,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,178.80 : 51,268.20 = 20,988.40 : x
  2. Step 2: Convert to fraction form
    34,178.80/51,268.20 = 20,988.40/x
  3. Step 3: Cross multiply
    34,178.80x = 51,268.20 × 20,988.40
  4. Step 4: Simplify right side
    34,178.80x = 1,076,037,488.88
  5. Step 5: Solve for x
    x = 1,076,037,488.88/34,178.80
  6. Step 6: Final answer
    x = 31,482.60

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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.