Home / 15,408.59-21,263.79-8,694.22

Finding the Fourth Proportional to 15,408.59, 21,263.79 and 8,694.22

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Solution

The fourth proportional to 15,408.59, 21,263.79 and 8,694.22 is: 11,997.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.59 : 21,263.79 = 8,694.22 : x
  2. Step 2: Convert to fraction form
    15,408.59/21,263.79 = 8,694.22/x
  3. Step 3: Cross multiply
    15,408.59x = 21,263.79 × 8,694.22
  4. Step 4: Simplify right side
    15,408.59x = 184,872,068.29
  5. Step 5: Solve for x
    x = 184,872,068.29/15,408.59
  6. Step 6: Final answer
    x = 11,997.99

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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.