Home / 28,888.56-43,339.20-10,420.56

Finding the Fourth Proportional to 28,888.56, 43,339.20 and 10,420.56

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Solution

The fourth proportional to 28,888.56, 43,339.20 and 10,420.56 is: 15,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.56 : 43,339.20 = 10,420.56 : x
  2. Step 2: Convert to fraction form
    28,888.56/43,339.20 = 10,420.56/x
  3. Step 3: Cross multiply
    28,888.56x = 43,339.20 × 10,420.56
  4. Step 4: Simplify right side
    28,888.56x = 451,618,733.95
  5. Step 5: Solve for x
    x = 451,618,733.95/28,888.56
  6. Step 6: Final answer
    x = 15,633.13

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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.