Home / 21,210.50-31,807.75-17,040.26

Finding the Fourth Proportional to 21,210.50, 31,807.75 and 17,040.26

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Solution

The fourth proportional to 21,210.50, 31,807.75 and 17,040.26 is: 25,553.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.50 : 31,807.75 = 17,040.26 : x
  2. Step 2: Convert to fraction form
    21,210.50/31,807.75 = 17,040.26/x
  3. Step 3: Cross multiply
    21,210.50x = 31,807.75 × 17,040.26
  4. Step 4: Simplify right side
    21,210.50x = 542,012,330.02
  5. Step 5: Solve for x
    x = 542,012,330.02/21,210.50
  6. Step 6: Final answer
    x = 25,553.96

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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.