Home / 42,563.90-63,885.20-21,518.75

Finding the Fourth Proportional to 42,563.90, 63,885.20 and 21,518.75

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Solution

The fourth proportional to 42,563.90, 63,885.20 and 21,518.75 is: 32,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,563.90 : 63,885.20 = 21,518.75 : x
  2. Step 2: Convert to fraction form
    42,563.90/63,885.20 = 21,518.75/x
  3. Step 3: Cross multiply
    42,563.90x = 63,885.20 × 21,518.75
  4. Step 4: Simplify right side
    42,563.90x = 1,374,729,220.48
  5. Step 5: Solve for x
    x = 1,374,729,220.48/42,563.90
  6. Step 6: Final answer
    x = 32,298.01

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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.