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Finding the Fourth Proportional to 43,281.72, 64,916.07 and 13,695.72

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Solution

The fourth proportional to 43,281.72, 64,916.07 and 13,695.72 is: 20,541.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,281.72 : 64,916.07 = 13,695.72 : x
  2. Step 2: Convert to fraction form
    43,281.72/64,916.07 = 13,695.72/x
  3. Step 3: Cross multiply
    43,281.72x = 64,916.07 × 13,695.72
  4. Step 4: Simplify right side
    43,281.72x = 889,072,318.22
  5. Step 5: Solve for x
    x = 889,072,318.22/43,281.72
  6. Step 6: Final answer
    x = 20,541.52

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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.