Home / 28,051.30-38,710.86-15,304.52

Finding the Fourth Proportional to 28,051.30, 38,710.86 and 15,304.52

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Solution

The fourth proportional to 28,051.30, 38,710.86 and 15,304.52 is: 21,120.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.30 : 38,710.86 = 15,304.52 : x
  2. Step 2: Convert to fraction form
    28,051.30/38,710.86 = 15,304.52/x
  3. Step 3: Cross multiply
    28,051.30x = 38,710.86 × 15,304.52
  4. Step 4: Simplify right side
    28,051.30x = 592,451,131.09
  5. Step 5: Solve for x
    x = 592,451,131.09/28,051.30
  6. Step 6: Final answer
    x = 21,120.27

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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.