Home / 18,780.42-25,915.96-10,280.84

Finding the Fourth Proportional to 18,780.42, 25,915.96 and 10,280.84

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Solution

The fourth proportional to 18,780.42, 25,915.96 and 10,280.84 is: 14,187.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.42 : 25,915.96 = 10,280.84 : x
  2. Step 2: Convert to fraction form
    18,780.42/25,915.96 = 10,280.84/x
  3. Step 3: Cross multiply
    18,780.42x = 25,915.96 × 10,280.84
  4. Step 4: Simplify right side
    18,780.42x = 266,437,877.29
  5. Step 5: Solve for x
    x = 266,437,877.29/18,780.42
  6. Step 6: Final answer
    x = 14,187.00

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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.