Home / 25,780.43-38,666.90-9,993.02

Finding the Fourth Proportional to 25,780.43, 38,666.90 and 9,993.02

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Solution

The fourth proportional to 25,780.43, 38,666.90 and 9,993.02 is: 14,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,780.43 : 38,666.90 = 9,993.02 : x
  2. Step 2: Convert to fraction form
    25,780.43/38,666.90 = 9,993.02/x
  3. Step 3: Cross multiply
    25,780.43x = 38,666.90 × 9,993.02
  4. Step 4: Simplify right side
    25,780.43x = 386,398,936.69
  5. Step 5: Solve for x
    x = 386,398,936.69/25,780.43
  6. Step 6: Final answer
    x = 14,988.07

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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.