Home / 25,420.10-38,143.14-12,108.14

Finding the Fourth Proportional to 25,420.10, 38,143.14 and 12,108.14

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Solution

The fourth proportional to 25,420.10, 38,143.14 and 12,108.14 is: 18,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.10 : 38,143.14 = 12,108.14 : x
  2. Step 2: Convert to fraction form
    25,420.10/38,143.14 = 12,108.14/x
  3. Step 3: Cross multiply
    25,420.10x = 38,143.14 × 12,108.14
  4. Step 4: Simplify right side
    25,420.10x = 461,842,479.16
  5. Step 5: Solve for x
    x = 461,842,479.16/25,420.10
  6. Step 6: Final answer
    x = 18,168.40

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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.