Home / 19,139.16-28,708.76-10,429.44

Finding the Fourth Proportional to 19,139.16, 28,708.76 and 10,429.44

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Solution

The fourth proportional to 19,139.16, 28,708.76 and 10,429.44 is: 15,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.16 : 28,708.76 = 10,429.44 : x
  2. Step 2: Convert to fraction form
    19,139.16/28,708.76 = 10,429.44/x
  3. Step 3: Cross multiply
    19,139.16x = 28,708.76 × 10,429.44
  4. Step 4: Simplify right side
    19,139.16x = 299,416,289.89
  5. Step 5: Solve for x
    x = 299,416,289.89/19,139.16
  6. Step 6: Final answer
    x = 15,644.17

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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.