Home / 28,884.48-39,803.52-20,486.40

Finding the Fourth Proportional to 28,884.48, 39,803.52 and 20,486.40

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Solution

The fourth proportional to 28,884.48, 39,803.52 and 20,486.40 is: 28,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,884.48 : 39,803.52 = 20,486.40 : x
  2. Step 2: Convert to fraction form
    28,884.48/39,803.52 = 20,486.40/x
  3. Step 3: Cross multiply
    28,884.48x = 39,803.52 × 20,486.40
  4. Step 4: Simplify right side
    28,884.48x = 815,430,832.13
  5. Step 5: Solve for x
    x = 815,430,832.13/28,884.48
  6. Step 6: Final answer
    x = 28,230.76

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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.