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Finding the Fourth Proportional to 29,271.68, 40,395.90 and 17,938.99

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Solution

The fourth proportional to 29,271.68, 40,395.90 and 17,938.99 is: 24,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,271.68 : 40,395.90 = 17,938.99 : x
  2. Step 2: Convert to fraction form
    29,271.68/40,395.90 = 17,938.99/x
  3. Step 3: Cross multiply
    29,271.68x = 40,395.90 × 17,938.99
  4. Step 4: Simplify right side
    29,271.68x = 724,661,354.47
  5. Step 5: Solve for x
    x = 724,661,354.47/29,271.68
  6. Step 6: Final answer
    x = 24,756.40

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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.