Home / 28,688.20-43,019.34-10,220.68

Finding the Fourth Proportional to 28,688.20, 43,019.34 and 10,220.68

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Solution

The fourth proportional to 28,688.20, 43,019.34 and 10,220.68 is: 15,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.20 : 43,019.34 = 10,220.68 : x
  2. Step 2: Convert to fraction form
    28,688.20/43,019.34 = 10,220.68/x
  3. Step 3: Cross multiply
    28,688.20x = 43,019.34 × 10,220.68
  4. Step 4: Simplify right side
    28,688.20x = 439,686,907.95
  5. Step 5: Solve for x
    x = 439,686,907.95/28,688.20
  6. Step 6: Final answer
    x = 15,326.40

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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.