Home / 28,284.24-39,031.44-15,708.18

Finding the Fourth Proportional to 28,284.24, 39,031.44 and 15,708.18

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Solution

The fourth proportional to 28,284.24, 39,031.44 and 15,708.18 is: 21,676.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.24 : 39,031.44 = 15,708.18 : x
  2. Step 2: Convert to fraction form
    28,284.24/39,031.44 = 15,708.18/x
  3. Step 3: Cross multiply
    28,284.24x = 39,031.44 × 15,708.18
  4. Step 4: Simplify right side
    28,284.24x = 613,112,885.18
  5. Step 5: Solve for x
    x = 613,112,885.18/28,284.24
  6. Step 6: Final answer
    x = 21,676.84

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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.