Home / 13,151.20-19,726.90-4,386.10

Finding the Fourth Proportional to 13,151.20, 19,726.90 and 4,386.10

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Solution

The fourth proportional to 13,151.20, 19,726.90 and 4,386.10 is: 6,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.20 : 19,726.90 = 4,386.10 : x
  2. Step 2: Convert to fraction form
    13,151.20/19,726.90 = 4,386.10/x
  3. Step 3: Cross multiply
    13,151.20x = 19,726.90 × 4,386.10
  4. Step 4: Simplify right side
    13,151.20x = 86,524,156.09
  5. Step 5: Solve for x
    x = 86,524,156.09/13,151.20
  6. Step 6: Final answer
    x = 6,579.18

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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.