Home / 18,818.87-25,970.30-10,320.43

Finding the Fourth Proportional to 18,818.87, 25,970.30 and 10,320.43

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Solution

The fourth proportional to 18,818.87, 25,970.30 and 10,320.43 is: 14,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.87 : 25,970.30 = 10,320.43 : x
  2. Step 2: Convert to fraction form
    18,818.87/25,970.30 = 10,320.43/x
  3. Step 3: Cross multiply
    18,818.87x = 25,970.30 × 10,320.43
  4. Step 4: Simplify right side
    18,818.87x = 268,024,702.14
  5. Step 5: Solve for x
    x = 268,024,702.14/18,818.87
  6. Step 6: Final answer
    x = 14,242.34

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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.