Home / 18,117.78-25,002.80-10,946.70

Finding the Fourth Proportional to 18,117.78, 25,002.80 and 10,946.70

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Solution

The fourth proportional to 18,117.78, 25,002.80 and 10,946.70 is: 15,106.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.78 : 25,002.80 = 10,946.70 : x
  2. Step 2: Convert to fraction form
    18,117.78/25,002.80 = 10,946.70/x
  3. Step 3: Cross multiply
    18,117.78x = 25,002.80 × 10,946.70
  4. Step 4: Simplify right side
    18,117.78x = 273,698,150.76
  5. Step 5: Solve for x
    x = 273,698,150.76/18,117.78
  6. Step 6: Final answer
    x = 15,106.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.