Home / 28,131.21-42,217.59-13,340.18

Finding the Fourth Proportional to 28,131.21, 42,217.59 and 13,340.18

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Solution

The fourth proportional to 28,131.21, 42,217.59 and 13,340.18 is: 20,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.21 : 42,217.59 = 13,340.18 : x
  2. Step 2: Convert to fraction form
    28,131.21/42,217.59 = 13,340.18/x
  3. Step 3: Cross multiply
    28,131.21x = 42,217.59 × 13,340.18
  4. Step 4: Simplify right side
    28,131.21x = 563,190,038.68
  5. Step 5: Solve for x
    x = 563,190,038.68/28,131.21
  6. Step 6: Final answer
    x = 20,020.11

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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.