Home / 29,340.90-40,490.28-15,911.28

Finding the Fourth Proportional to 29,340.90, 40,490.28 and 15,911.28

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Solution

The fourth proportional to 29,340.90, 40,490.28 and 15,911.28 is: 21,957.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,340.90 : 40,490.28 = 15,911.28 : x
  2. Step 2: Convert to fraction form
    29,340.90/40,490.28 = 15,911.28/x
  3. Step 3: Cross multiply
    29,340.90x = 40,490.28 × 15,911.28
  4. Step 4: Simplify right side
    29,340.90x = 644,252,182.36
  5. Step 5: Solve for x
    x = 644,252,182.36/29,340.90
  6. Step 6: Final answer
    x = 21,957.48

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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.