Home / 21,220.19-31,957.23-19,328.52

Finding the Fourth Proportional to 21,220.19, 31,957.23 and 19,328.52

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Solution

The fourth proportional to 21,220.19, 31,957.23 and 19,328.52 is: 29,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.19 : 31,957.23 = 19,328.52 : x
  2. Step 2: Convert to fraction form
    21,220.19/31,957.23 = 19,328.52/x
  3. Step 3: Cross multiply
    21,220.19x = 31,957.23 × 19,328.52
  4. Step 4: Simplify right side
    21,220.19x = 617,685,959.20
  5. Step 5: Solve for x
    x = 617,685,959.20/21,220.19
  6. Step 6: Final answer
    x = 29,108.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.