Home / 28,860.80-43,289.58-7,800.53

Finding the Fourth Proportional to 28,860.80, 43,289.58 and 7,800.53

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Solution

The fourth proportional to 28,860.80, 43,289.58 and 7,800.53 is: 11,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.80 : 43,289.58 = 7,800.53 : x
  2. Step 2: Convert to fraction form
    28,860.80/43,289.58 = 7,800.53/x
  3. Step 3: Cross multiply
    28,860.80x = 43,289.58 × 7,800.53
  4. Step 4: Simplify right side
    28,860.80x = 337,681,667.48
  5. Step 5: Solve for x
    x = 337,681,667.48/28,860.80
  6. Step 6: Final answer
    x = 11,700.36

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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.