Home / 20,959.02-31,436.10-19,802.34

Finding the Fourth Proportional to 20,959.02, 31,436.10 and 19,802.34

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Solution

The fourth proportional to 20,959.02, 31,436.10 and 19,802.34 is: 29,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.02 : 31,436.10 = 19,802.34 : x
  2. Step 2: Convert to fraction form
    20,959.02/31,436.10 = 19,802.34/x
  3. Step 3: Cross multiply
    20,959.02x = 31,436.10 × 19,802.34
  4. Step 4: Simplify right side
    20,959.02x = 622,508,340.47
  5. Step 5: Solve for x
    x = 622,508,340.47/20,959.02
  6. Step 6: Final answer
    x = 29,701.21

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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.