Home / 15,386-21,222.84-9,093.92

Finding the Fourth Proportional to 15,386, 21,222.84 and 9,093.92

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Solution

The fourth proportional to 15,386, 21,222.84 and 9,093.92 is: 12,543.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386 : 21,222.84 = 9,093.92 : x
  2. Step 2: Convert to fraction form
    15,386/21,222.84 = 9,093.92/x
  3. Step 3: Cross multiply
    15,386x = 21,222.84 × 9,093.92
  4. Step 4: Simplify right side
    15,386x = 192,998,809.13
  5. Step 5: Solve for x
    x = 192,998,809.13/15,386
  6. Step 6: Final answer
    x = 12,543.79

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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.