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Finding the Fourth Proportional to 43,622.60, 65,433.90 and 15,931.40

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Solution

The fourth proportional to 43,622.60, 65,433.90 and 15,931.40 is: 23,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,622.60 : 65,433.90 = 15,931.40 : x
  2. Step 2: Convert to fraction form
    43,622.60/65,433.90 = 15,931.40/x
  3. Step 3: Cross multiply
    43,622.60x = 65,433.90 × 15,931.40
  4. Step 4: Simplify right side
    43,622.60x = 1,042,453,634.46
  5. Step 5: Solve for x
    x = 1,042,453,634.46/43,622.60
  6. Step 6: Final answer
    x = 23,897.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.