Home / 18,387.90-25,374.57-10,004.40

Finding the Fourth Proportional to 18,387.90, 25,374.57 and 10,004.40

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Solution

The fourth proportional to 18,387.90, 25,374.57 and 10,004.40 is: 13,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.90 : 25,374.57 = 10,004.40 : x
  2. Step 2: Convert to fraction form
    18,387.90/25,374.57 = 10,004.40/x
  3. Step 3: Cross multiply
    18,387.90x = 25,374.57 × 10,004.40
  4. Step 4: Simplify right side
    18,387.90x = 253,857,348.11
  5. Step 5: Solve for x
    x = 253,857,348.11/18,387.90
  6. Step 6: Final answer
    x = 13,805.67

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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.