Home / 25,411.09-38,129.63-12,099.15

Finding the Fourth Proportional to 25,411.09, 38,129.63 and 12,099.15

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Solution

The fourth proportional to 25,411.09, 38,129.63 and 12,099.15 is: 18,154.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,411.09 : 38,129.63 = 12,099.15 : x
  2. Step 2: Convert to fraction form
    25,411.09/38,129.63 = 12,099.15/x
  3. Step 3: Cross multiply
    25,411.09x = 38,129.63 × 12,099.15
  4. Step 4: Simplify right side
    25,411.09x = 461,336,112.81
  5. Step 5: Solve for x
    x = 461,336,112.81/25,411.09
  6. Step 6: Final answer
    x = 18,154.91

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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.