Home / 15,621.39-21,557.01-8,547.34

Finding the Fourth Proportional to 15,621.39, 21,557.01 and 8,547.34

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Solution

The fourth proportional to 15,621.39, 21,557.01 and 8,547.34 is: 11,795.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.39 : 21,557.01 = 8,547.34 : x
  2. Step 2: Convert to fraction form
    15,621.39/21,557.01 = 8,547.34/x
  3. Step 3: Cross multiply
    15,621.39x = 21,557.01 × 8,547.34
  4. Step 4: Simplify right side
    15,621.39x = 184,255,093.85
  5. Step 5: Solve for x
    x = 184,255,093.85/15,621.39
  6. Step 6: Final answer
    x = 11,795.05

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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.