Home / 28,514.88-39,312-23,201.28

Finding the Fourth Proportional to 28,514.88, 39,312 and 23,201.28

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Solution

The fourth proportional to 28,514.88, 39,312 and 23,201.28 is: 31,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.88 : 39,312 = 23,201.28 : x
  2. Step 2: Convert to fraction form
    28,514.88/39,312 = 23,201.28/x
  3. Step 3: Cross multiply
    28,514.88x = 39,312 × 23,201.28
  4. Step 4: Simplify right side
    28,514.88x = 912,088,719.36
  5. Step 5: Solve for x
    x = 912,088,719.36/28,514.88
  6. Step 6: Final answer
    x = 31,986.41

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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.