Home / 19,145.10-28,717.65-13,240.20

Finding the Fourth Proportional to 19,145.10, 28,717.65 and 13,240.20

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Solution

The fourth proportional to 19,145.10, 28,717.65 and 13,240.20 is: 19,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.10 : 28,717.65 = 13,240.20 : x
  2. Step 2: Convert to fraction form
    19,145.10/28,717.65 = 13,240.20/x
  3. Step 3: Cross multiply
    19,145.10x = 28,717.65 × 13,240.20
  4. Step 4: Simplify right side
    19,145.10x = 380,227,429.53
  5. Step 5: Solve for x
    x = 380,227,429.53/19,145.10
  6. Step 6: Final answer
    x = 19,860.30

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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.