Home / 28,543.88-42,803.39-13,555.31

Finding the Fourth Proportional to 28,543.88, 42,803.39 and 13,555.31

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Solution

The fourth proportional to 28,543.88, 42,803.39 and 13,555.31 is: 20,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.88 : 42,803.39 = 13,555.31 : x
  2. Step 2: Convert to fraction form
    28,543.88/42,803.39 = 13,555.31/x
  3. Step 3: Cross multiply
    28,543.88x = 42,803.39 × 13,555.31
  4. Step 4: Simplify right side
    28,543.88x = 580,212,938.71
  5. Step 5: Solve for x
    x = 580,212,938.71/28,543.88
  6. Step 6: Final answer
    x = 20,327.06

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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.