Home / 21,038.32-31,576.92-10,657.36

Finding the Fourth Proportional to 21,038.32, 31,576.92 and 10,657.36

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Solution

The fourth proportional to 21,038.32, 31,576.92 and 10,657.36 is: 15,995.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.32 : 31,576.92 = 10,657.36 : x
  2. Step 2: Convert to fraction form
    21,038.32/31,576.92 = 10,657.36/x
  3. Step 3: Cross multiply
    21,038.32x = 31,576.92 × 10,657.36
  4. Step 4: Simplify right side
    21,038.32x = 336,526,604.13
  5. Step 5: Solve for x
    x = 336,526,604.13/21,038.32
  6. Step 6: Final answer
    x = 15,995.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.