Home / 28,572.12-39,427.02-15,825.02

Finding the Fourth Proportional to 28,572.12, 39,427.02 and 15,825.02

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Solution

The fourth proportional to 28,572.12, 39,427.02 and 15,825.02 is: 21,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.12 : 39,427.02 = 15,825.02 : x
  2. Step 2: Convert to fraction form
    28,572.12/39,427.02 = 15,825.02/x
  3. Step 3: Cross multiply
    28,572.12x = 39,427.02 × 15,825.02
  4. Step 4: Simplify right side
    28,572.12x = 623,933,380.04
  5. Step 5: Solve for x
    x = 623,933,380.04/28,572.12
  6. Step 6: Final answer
    x = 21,837.14

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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.