Home / 42,255.40-63,386.40-18,884.20

Finding the Fourth Proportional to 42,255.40, 63,386.40 and 18,884.20

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Solution

The fourth proportional to 42,255.40, 63,386.40 and 18,884.20 is: 28,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,255.40 : 63,386.40 = 18,884.20 : x
  2. Step 2: Convert to fraction form
    42,255.40/63,386.40 = 18,884.20/x
  3. Step 3: Cross multiply
    42,255.40x = 63,386.40 × 18,884.20
  4. Step 4: Simplify right side
    42,255.40x = 1,197,001,454.88
  5. Step 5: Solve for x
    x = 1,197,001,454.88/42,255.40
  6. Step 6: Final answer
    x = 28,327.77

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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.