Home / 15,338.95-21,166.21-8,623.51

Finding the Fourth Proportional to 15,338.95, 21,166.21 and 8,623.51

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Solution

The fourth proportional to 15,338.95, 21,166.21 and 8,623.51 is: 11,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.95 : 21,166.21 = 8,623.51 : x
  2. Step 2: Convert to fraction form
    15,338.95/21,166.21 = 8,623.51/x
  3. Step 3: Cross multiply
    15,338.95x = 21,166.21 × 8,623.51
  4. Step 4: Simplify right side
    15,338.95x = 182,527,023.60
  5. Step 5: Solve for x
    x = 182,527,023.60/15,338.95
  6. Step 6: Final answer
    x = 11,899.58

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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.