Home / 28,283.52-39,031.32-15,708.28

Finding the Fourth Proportional to 28,283.52, 39,031.32 and 15,708.28

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Solution

The fourth proportional to 28,283.52, 39,031.32 and 15,708.28 is: 21,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.52 : 39,031.32 = 15,708.28 : x
  2. Step 2: Convert to fraction form
    28,283.52/39,031.32 = 15,708.28/x
  3. Step 3: Cross multiply
    28,283.52x = 39,031.32 × 15,708.28
  4. Step 4: Simplify right side
    28,283.52x = 613,114,903.33
  5. Step 5: Solve for x
    x = 613,114,903.33/28,283.52
  6. Step 6: Final answer
    x = 21,677.46

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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.