Home / 18,830.49-25,988.37-10,872.70

Finding the Fourth Proportional to 18,830.49, 25,988.37 and 10,872.70

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Solution

The fourth proportional to 18,830.49, 25,988.37 and 10,872.70 is: 15,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.49 : 25,988.37 = 10,872.70 : x
  2. Step 2: Convert to fraction form
    18,830.49/25,988.37 = 10,872.70/x
  3. Step 3: Cross multiply
    18,830.49x = 25,988.37 × 10,872.70
  4. Step 4: Simplify right side
    18,830.49x = 282,563,750.50
  5. Step 5: Solve for x
    x = 282,563,750.50/18,830.49
  6. Step 6: Final answer
    x = 15,005.65

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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.