Home / 42,581.42-63,871.80-10,988.79

Finding the Fourth Proportional to 42,581.42, 63,871.80 and 10,988.79

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Solution

The fourth proportional to 42,581.42, 63,871.80 and 10,988.79 is: 16,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,581.42 : 63,871.80 = 10,988.79 : x
  2. Step 2: Convert to fraction form
    42,581.42/63,871.80 = 10,988.79/x
  3. Step 3: Cross multiply
    42,581.42x = 63,871.80 × 10,988.79
  4. Step 4: Simplify right side
    42,581.42x = 701,873,797.12
  5. Step 5: Solve for x
    x = 701,873,797.12/42,581.42
  6. Step 6: Final answer
    x = 16,483.10

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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.