Home / 42,571.46-63,858.29-12,989.21

Finding the Fourth Proportional to 42,571.46, 63,858.29 and 12,989.21

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Solution

The fourth proportional to 42,571.46, 63,858.29 and 12,989.21 is: 19,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,571.46 : 63,858.29 = 12,989.21 : x
  2. Step 2: Convert to fraction form
    42,571.46/63,858.29 = 12,989.21/x
  3. Step 3: Cross multiply
    42,571.46x = 63,858.29 × 12,989.21
  4. Step 4: Simplify right side
    42,571.46x = 829,468,354.81
  5. Step 5: Solve for x
    x = 829,468,354.81/42,571.46
  6. Step 6: Final answer
    x = 19,484.14

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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.