Home / 28,855.80-43,275.60-9,140.40

Finding the Fourth Proportional to 28,855.80, 43,275.60 and 9,140.40

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Solution

The fourth proportional to 28,855.80, 43,275.60 and 9,140.40 is: 13,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.80 : 43,275.60 = 9,140.40 : x
  2. Step 2: Convert to fraction form
    28,855.80/43,275.60 = 9,140.40/x
  3. Step 3: Cross multiply
    28,855.80x = 43,275.60 × 9,140.40
  4. Step 4: Simplify right side
    28,855.80x = 395,556,294.24
  5. Step 5: Solve for x
    x = 395,556,294.24/28,855.80
  6. Step 6: Final answer
    x = 13,708.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.