Home / 42,574.02-63,860.85-12,991.76

Finding the Fourth Proportional to 42,574.02, 63,860.85 and 12,991.76

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Solution

The fourth proportional to 42,574.02, 63,860.85 and 12,991.76 is: 19,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,574.02 : 63,860.85 = 12,991.76 : x
  2. Step 2: Convert to fraction form
    42,574.02/63,860.85 = 12,991.76/x
  3. Step 3: Cross multiply
    42,574.02x = 63,860.85 × 12,991.76
  4. Step 4: Simplify right side
    42,574.02x = 829,664,517.29
  5. Step 5: Solve for x
    x = 829,664,517.29/42,574.02
  6. Step 6: Final answer
    x = 19,487.58

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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.