Home / 29,206.80-40,309.12-19,143.76

Finding the Fourth Proportional to 29,206.80, 40,309.12 and 19,143.76

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Solution

The fourth proportional to 29,206.80, 40,309.12 and 19,143.76 is: 26,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,206.80 : 40,309.12 = 19,143.76 : x
  2. Step 2: Convert to fraction form
    29,206.80/40,309.12 = 19,143.76/x
  3. Step 3: Cross multiply
    29,206.80x = 40,309.12 × 19,143.76
  4. Step 4: Simplify right side
    29,206.80x = 771,668,119.09
  5. Step 5: Solve for x
    x = 771,668,119.09/29,206.80
  6. Step 6: Final answer
    x = 26,420.84

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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.