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Finding the Fourth Proportional to 15,913.40, 23,871.11 and 5,384.48

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Solution

The fourth proportional to 15,913.40, 23,871.11 and 5,384.48 is: 8,077.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.40 : 23,871.11 = 5,384.48 : x
  2. Step 2: Convert to fraction form
    15,913.40/23,871.11 = 5,384.48/x
  3. Step 3: Cross multiply
    15,913.40x = 23,871.11 × 5,384.48
  4. Step 4: Simplify right side
    15,913.40x = 128,533,368.09
  5. Step 5: Solve for x
    x = 128,533,368.09/15,913.40
  6. Step 6: Final answer
    x = 8,077.06

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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.