Home / 28,160.12-38,860.88-15,239.37

Finding the Fourth Proportional to 28,160.12, 38,860.88 and 15,239.37

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Solution

The fourth proportional to 28,160.12, 38,860.88 and 15,239.37 is: 21,030.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.12 : 38,860.88 = 15,239.37 : x
  2. Step 2: Convert to fraction form
    28,160.12/38,860.88 = 15,239.37/x
  3. Step 3: Cross multiply
    28,160.12x = 38,860.88 × 15,239.37
  4. Step 4: Simplify right side
    28,160.12x = 592,215,448.74
  5. Step 5: Solve for x
    x = 592,215,448.74/28,160.12
  6. Step 6: Final answer
    x = 21,030.29

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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.