Home / 42,666.90-64,019.55-19,281.30

Finding the Fourth Proportional to 42,666.90, 64,019.55 and 19,281.30

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Solution

The fourth proportional to 42,666.90, 64,019.55 and 19,281.30 is: 28,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,666.90 : 64,019.55 = 19,281.30 : x
  2. Step 2: Convert to fraction form
    42,666.90/64,019.55 = 19,281.30/x
  3. Step 3: Cross multiply
    42,666.90x = 64,019.55 × 19,281.30
  4. Step 4: Simplify right side
    42,666.90x = 1,234,380,149.42
  5. Step 5: Solve for x
    x = 1,234,380,149.42/42,666.90
  6. Step 6: Final answer
    x = 28,930.63

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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.