Home / 15,818.50-21,829.89-10,239.22

Finding the Fourth Proportional to 15,818.50, 21,829.89 and 10,239.22

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Solution

The fourth proportional to 15,818.50, 21,829.89 and 10,239.22 is: 14,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.50 : 21,829.89 = 10,239.22 : x
  2. Step 2: Convert to fraction form
    15,818.50/21,829.89 = 10,239.22/x
  3. Step 3: Cross multiply
    15,818.50x = 21,829.89 × 10,239.22
  4. Step 4: Simplify right side
    15,818.50x = 223,521,046.29
  5. Step 5: Solve for x
    x = 223,521,046.29/15,818.50
  6. Step 6: Final answer
    x = 14,130.36

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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.