Home / 15,704.68-21,673.40-10,390.20

Finding the Fourth Proportional to 15,704.68, 21,673.40 and 10,390.20

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Solution

The fourth proportional to 15,704.68, 21,673.40 and 10,390.20 is: 14,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.68 : 21,673.40 = 10,390.20 : x
  2. Step 2: Convert to fraction form
    15,704.68/21,673.40 = 10,390.20/x
  3. Step 3: Cross multiply
    15,704.68x = 21,673.40 × 10,390.20
  4. Step 4: Simplify right side
    15,704.68x = 225,190,960.68
  5. Step 5: Solve for x
    x = 225,190,960.68/15,704.68
  6. Step 6: Final answer
    x = 14,339.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.