Home / 28,222.19-42,347.05-12,425.22

Finding the Fourth Proportional to 28,222.19, 42,347.05 and 12,425.22

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Solution

The fourth proportional to 28,222.19, 42,347.05 and 12,425.22 is: 18,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.19 : 42,347.05 = 12,425.22 : x
  2. Step 2: Convert to fraction form
    28,222.19/42,347.05 = 12,425.22/x
  3. Step 3: Cross multiply
    28,222.19x = 42,347.05 × 12,425.22
  4. Step 4: Simplify right side
    28,222.19x = 526,171,381.54
  5. Step 5: Solve for x
    x = 526,171,381.54/28,222.19
  6. Step 6: Final answer
    x = 18,643.89

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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.