Home / 42,620.84-63,938.41-13,031.74

Finding the Fourth Proportional to 42,620.84, 63,938.41 and 13,031.74

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Solution

The fourth proportional to 42,620.84, 63,938.41 and 13,031.74 is: 19,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620.84 : 63,938.41 = 13,031.74 : x
  2. Step 2: Convert to fraction form
    42,620.84/63,938.41 = 13,031.74/x
  3. Step 3: Cross multiply
    42,620.84x = 63,938.41 × 13,031.74
  4. Step 4: Simplify right side
    42,620.84x = 833,228,735.13
  5. Step 5: Solve for x
    x = 833,228,735.13/42,620.84
  6. Step 6: Final answer
    x = 19,549.80

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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.