Home / 19,139.40-28,717.47-7,448.58

Finding the Fourth Proportional to 19,139.40, 28,717.47 and 7,448.58

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Solution

The fourth proportional to 19,139.40, 28,717.47 and 7,448.58 is: 11,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.40 : 28,717.47 = 7,448.58 : x
  2. Step 2: Convert to fraction form
    19,139.40/28,717.47 = 7,448.58/x
  3. Step 3: Cross multiply
    19,139.40x = 28,717.47 × 7,448.58
  4. Step 4: Simplify right side
    19,139.40x = 213,904,372.69
  5. Step 5: Solve for x
    x = 213,904,372.69/19,139.40
  6. Step 6: Final answer
    x = 11,176.13

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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.