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Finding the Fourth Proportional to 43,567.47, 65,345.02 and 13,981.47

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Solution

The fourth proportional to 43,567.47, 65,345.02 and 13,981.47 is: 20,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,567.47 : 65,345.02 = 13,981.47 : x
  2. Step 2: Convert to fraction form
    43,567.47/65,345.02 = 13,981.47/x
  3. Step 3: Cross multiply
    43,567.47x = 65,345.02 × 13,981.47
  4. Step 4: Simplify right side
    43,567.47x = 913,619,436.78
  5. Step 5: Solve for x
    x = 913,619,436.78/43,567.47
  6. Step 6: Final answer
    x = 20,970.22

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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.