Home / 16,820.70-25,231.05-10,915.80

Finding the Fourth Proportional to 16,820.70, 25,231.05 and 10,915.80

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Solution

The fourth proportional to 16,820.70, 25,231.05 and 10,915.80 is: 16,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.70 : 25,231.05 = 10,915.80 : x
  2. Step 2: Convert to fraction form
    16,820.70/25,231.05 = 10,915.80/x
  3. Step 3: Cross multiply
    16,820.70x = 25,231.05 × 10,915.80
  4. Step 4: Simplify right side
    16,820.70x = 275,417,095.59
  5. Step 5: Solve for x
    x = 275,417,095.59/16,820.70
  6. Step 6: Final answer
    x = 16,373.70

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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.