Home / 18,780.48-25,915.56-10,280.70

Finding the Fourth Proportional to 18,780.48, 25,915.56 and 10,280.70

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Solution

The fourth proportional to 18,780.48, 25,915.56 and 10,280.70 is: 14,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.48 : 25,915.56 = 10,280.70 : x
  2. Step 2: Convert to fraction form
    18,780.48/25,915.56 = 10,280.70/x
  3. Step 3: Cross multiply
    18,780.48x = 25,915.56 × 10,280.70
  4. Step 4: Simplify right side
    18,780.48x = 266,430,097.69
  5. Step 5: Solve for x
    x = 266,430,097.69/18,780.48
  6. Step 6: Final answer
    x = 14,186.54

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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.