Home / 10,564.20-15,827.10-6,455.40

Finding the Fourth Proportional to 10,564.20, 15,827.10 and 6,455.40

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Solution

The fourth proportional to 10,564.20, 15,827.10 and 6,455.40 is: 9,671.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,564.20 : 15,827.10 = 6,455.40 : x
  2. Step 2: Convert to fraction form
    10,564.20/15,827.10 = 6,455.40/x
  3. Step 3: Cross multiply
    10,564.20x = 15,827.10 × 6,455.40
  4. Step 4: Simplify right side
    10,564.20x = 102,170,261.34
  5. Step 5: Solve for x
    x = 102,170,261.34/10,564.20
  6. Step 6: Final answer
    x = 9,671.37

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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.