Home / 18,862.90-28,297.28-5,712.14

Finding the Fourth Proportional to 18,862.90, 28,297.28 and 5,712.14

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Solution

The fourth proportional to 18,862.90, 28,297.28 and 5,712.14 is: 8,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.90 : 28,297.28 = 5,712.14 : x
  2. Step 2: Convert to fraction form
    18,862.90/28,297.28 = 5,712.14/x
  3. Step 3: Cross multiply
    18,862.90x = 28,297.28 × 5,712.14
  4. Step 4: Simplify right side
    18,862.90x = 161,638,110.00
  5. Step 5: Solve for x
    x = 161,638,110.00/18,862.90
  6. Step 6: Final answer
    x = 8,569.10

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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.