Home / 12,691.61-19,038.69-4,370.53

Finding the Fourth Proportional to 12,691.61, 19,038.69 and 4,370.53

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Solution

The fourth proportional to 12,691.61, 19,038.69 and 4,370.53 is: 6,556.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.61 : 19,038.69 = 4,370.53 : x
  2. Step 2: Convert to fraction form
    12,691.61/19,038.69 = 4,370.53/x
  3. Step 3: Cross multiply
    12,691.61x = 19,038.69 × 4,370.53
  4. Step 4: Simplify right side
    12,691.61x = 83,209,165.81
  5. Step 5: Solve for x
    x = 83,209,165.81/12,691.61
  6. Step 6: Final answer
    x = 6,556.23

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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.