Home / 42,568.63-63,862.34-12,988.75

Finding the Fourth Proportional to 42,568.63, 63,862.34 and 12,988.75

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Solution

The fourth proportional to 42,568.63, 63,862.34 and 12,988.75 is: 19,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,568.63 : 63,862.34 = 12,988.75 : x
  2. Step 2: Convert to fraction form
    42,568.63/63,862.34 = 12,988.75/x
  3. Step 3: Cross multiply
    42,568.63x = 63,862.34 × 12,988.75
  4. Step 4: Simplify right side
    42,568.63x = 829,491,968.68
  5. Step 5: Solve for x
    x = 829,491,968.68/42,568.63
  6. Step 6: Final answer
    x = 19,485.99

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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.