Home / 15,818.50-21,814.68-10,148.88

Finding the Fourth Proportional to 15,818.50, 21,814.68 and 10,148.88

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Solution

The fourth proportional to 15,818.50, 21,814.68 and 10,148.88 is: 13,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.50 : 21,814.68 = 10,148.88 : x
  2. Step 2: Convert to fraction form
    15,818.50/21,814.68 = 10,148.88/x
  3. Step 3: Cross multiply
    15,818.50x = 21,814.68 × 10,148.88
  4. Step 4: Simplify right side
    15,818.50x = 221,394,569.56
  5. Step 5: Solve for x
    x = 221,394,569.56/15,818.50
  6. Step 6: Final answer
    x = 13,995.93

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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.