Home / 28,071.36-42,125.76-10,555.20

Finding the Fourth Proportional to 28,071.36, 42,125.76 and 10,555.20

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Solution

The fourth proportional to 28,071.36, 42,125.76 and 10,555.20 is: 15,839.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.36 : 42,125.76 = 10,555.20 : x
  2. Step 2: Convert to fraction form
    28,071.36/42,125.76 = 10,555.20/x
  3. Step 3: Cross multiply
    28,071.36x = 42,125.76 × 10,555.20
  4. Step 4: Simplify right side
    28,071.36x = 444,645,821.95
  5. Step 5: Solve for x
    x = 444,645,821.95/28,071.36
  6. Step 6: Final answer
    x = 15,839.84

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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.