Home / 15,621.36-21,557.79-8,547.94

Finding the Fourth Proportional to 15,621.36, 21,557.79 and 8,547.94

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Solution

The fourth proportional to 15,621.36, 21,557.79 and 8,547.94 is: 11,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.36 : 21,557.79 = 8,547.94 : x
  2. Step 2: Convert to fraction form
    15,621.36/21,557.79 = 8,547.94/x
  3. Step 3: Cross multiply
    15,621.36x = 21,557.79 × 8,547.94
  4. Step 4: Simplify right side
    15,621.36x = 184,274,695.45
  5. Step 5: Solve for x
    x = 184,274,695.45/15,621.36
  6. Step 6: Final answer
    x = 11,796.33

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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.