Home / 15,398.95-21,250.55-8,325.37

Finding the Fourth Proportional to 15,398.95, 21,250.55 and 8,325.37

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Solution

The fourth proportional to 15,398.95, 21,250.55 and 8,325.37 is: 11,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.95 : 21,250.55 = 8,325.37 : x
  2. Step 2: Convert to fraction form
    15,398.95/21,250.55 = 8,325.37/x
  3. Step 3: Cross multiply
    15,398.95x = 21,250.55 × 8,325.37
  4. Step 4: Simplify right side
    15,398.95x = 176,918,765.39
  5. Step 5: Solve for x
    x = 176,918,765.39/15,398.95
  6. Step 6: Final answer
    x = 11,489.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.