Home / 12,697.13-19,038.40-6,766.72

Finding the Fourth Proportional to 12,697.13, 19,038.40 and 6,766.72

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Solution

The fourth proportional to 12,697.13, 19,038.40 and 6,766.72 is: 10,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.13 : 19,038.40 = 6,766.72 : x
  2. Step 2: Convert to fraction form
    12,697.13/19,038.40 = 6,766.72/x
  3. Step 3: Cross multiply
    12,697.13x = 19,038.40 × 6,766.72
  4. Step 4: Simplify right side
    12,697.13x = 128,827,426.86
  5. Step 5: Solve for x
    x = 128,827,426.86/12,697.13
  6. Step 6: Final answer
    x = 10,146.18

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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.