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Finding the Fourth Proportional to 29,300.71, 40,423.80 and 21,662.33

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Solution

The fourth proportional to 29,300.71, 40,423.80 and 21,662.33 is: 29,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,300.71 : 40,423.80 = 21,662.33 : x
  2. Step 2: Convert to fraction form
    29,300.71/40,423.80 = 21,662.33/x
  3. Step 3: Cross multiply
    29,300.71x = 40,423.80 × 21,662.33
  4. Step 4: Simplify right side
    29,300.71x = 875,673,695.45
  5. Step 5: Solve for x
    x = 875,673,695.45/29,300.71
  6. Step 6: Final answer
    x = 29,885.76

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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.