Home / 42,667.20-64,000.80-14,961.60

Finding the Fourth Proportional to 42,667.20, 64,000.80 and 14,961.60

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Solution

The fourth proportional to 42,667.20, 64,000.80 and 14,961.60 is: 22,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,667.20 : 64,000.80 = 14,961.60 : x
  2. Step 2: Convert to fraction form
    42,667.20/64,000.80 = 14,961.60/x
  3. Step 3: Cross multiply
    42,667.20x = 64,000.80 × 14,961.60
  4. Step 4: Simplify right side
    42,667.20x = 957,554,369.28
  5. Step 5: Solve for x
    x = 957,554,369.28/42,667.20
  6. Step 6: Final answer
    x = 22,442.40

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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.