Home / 18,925.21-28,407.84-10,612.18

Finding the Fourth Proportional to 18,925.21, 28,407.84 and 10,612.18

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Solution

The fourth proportional to 18,925.21, 28,407.84 and 10,612.18 is: 15,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.21 : 28,407.84 = 10,612.18 : x
  2. Step 2: Convert to fraction form
    18,925.21/28,407.84 = 10,612.18/x
  3. Step 3: Cross multiply
    18,925.21x = 28,407.84 × 10,612.18
  4. Step 4: Simplify right side
    18,925.21x = 301,469,111.49
  5. Step 5: Solve for x
    x = 301,469,111.49/18,925.21
  6. Step 6: Final answer
    x = 15,929.50

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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.