Home / 28,257.34-42,386.02-7,480.84

Finding the Fourth Proportional to 28,257.34, 42,386.02 and 7,480.84

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Solution

The fourth proportional to 28,257.34, 42,386.02 and 7,480.84 is: 11,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.34 : 42,386.02 = 7,480.84 : x
  2. Step 2: Convert to fraction form
    28,257.34/42,386.02 = 7,480.84/x
  3. Step 3: Cross multiply
    28,257.34x = 42,386.02 × 7,480.84
  4. Step 4: Simplify right side
    28,257.34x = 317,083,033.86
  5. Step 5: Solve for x
    x = 317,083,033.86/28,257.34
  6. Step 6: Final answer
    x = 11,221.26

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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.