Home / 12,551.84-18,820.38-4,761.20

Finding the Fourth Proportional to 12,551.84, 18,820.38 and 4,761.20

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Solution

The fourth proportional to 12,551.84, 18,820.38 and 4,761.20 is: 7,139.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.84 : 18,820.38 = 4,761.20 : x
  2. Step 2: Convert to fraction form
    12,551.84/18,820.38 = 4,761.20/x
  3. Step 3: Cross multiply
    12,551.84x = 18,820.38 × 4,761.20
  4. Step 4: Simplify right side
    12,551.84x = 89,607,593.26
  5. Step 5: Solve for x
    x = 89,607,593.26/12,551.84
  6. Step 6: Final answer
    x = 7,139.00

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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.