Home / 29,287.80-40,417.23-15,859.21

Finding the Fourth Proportional to 29,287.80, 40,417.23 and 15,859.21

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Solution

The fourth proportional to 29,287.80, 40,417.23 and 15,859.21 is: 21,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,287.80 : 40,417.23 = 15,859.21 : x
  2. Step 2: Convert to fraction form
    29,287.80/40,417.23 = 15,859.21/x
  3. Step 3: Cross multiply
    29,287.80x = 40,417.23 × 15,859.21
  4. Step 4: Simplify right side
    29,287.80x = 640,985,338.19
  5. Step 5: Solve for x
    x = 640,985,338.19/29,287.80
  6. Step 6: Final answer
    x = 21,885.75

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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.