Home / 28,097.12-38,774.52-15,521.60

Finding the Fourth Proportional to 28,097.12, 38,774.52 and 15,521.60

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Solution

The fourth proportional to 28,097.12, 38,774.52 and 15,521.60 is: 21,420.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.12 : 38,774.52 = 15,521.60 : x
  2. Step 2: Convert to fraction form
    28,097.12/38,774.52 = 15,521.60/x
  3. Step 3: Cross multiply
    28,097.12x = 38,774.52 × 15,521.60
  4. Step 4: Simplify right side
    28,097.12x = 601,842,589.63
  5. Step 5: Solve for x
    x = 601,842,589.63/28,097.12
  6. Step 6: Final answer
    x = 21,420.08

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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.