Home / 28,036.80-42,077.07-10,511.64

Finding the Fourth Proportional to 28,036.80, 42,077.07 and 10,511.64

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Solution

The fourth proportional to 28,036.80, 42,077.07 and 10,511.64 is: 15,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.80 : 42,077.07 = 10,511.64 : x
  2. Step 2: Convert to fraction form
    28,036.80/42,077.07 = 10,511.64/x
  3. Step 3: Cross multiply
    28,036.80x = 42,077.07 × 10,511.64
  4. Step 4: Simplify right side
    28,036.80x = 442,299,012.09
  5. Step 5: Solve for x
    x = 442,299,012.09/28,036.80
  6. Step 6: Final answer
    x = 15,775.66

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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.