Home / 15,810.31-21,821.25-10,423.29

Finding the Fourth Proportional to 15,810.31, 21,821.25 and 10,423.29

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Solution

The fourth proportional to 15,810.31, 21,821.25 and 10,423.29 is: 14,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.31 : 21,821.25 = 10,423.29 : x
  2. Step 2: Convert to fraction form
    15,810.31/21,821.25 = 10,423.29/x
  3. Step 3: Cross multiply
    15,810.31x = 21,821.25 × 10,423.29
  4. Step 4: Simplify right side
    15,810.31x = 227,449,216.91
  5. Step 5: Solve for x
    x = 227,449,216.91/15,810.31
  6. Step 6: Final answer
    x = 14,386.13

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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.