Home / 15,621.07-21,557.61-8,547.49

Finding the Fourth Proportional to 15,621.07, 21,557.61 and 8,547.49

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Solution

The fourth proportional to 15,621.07, 21,557.61 and 8,547.49 is: 11,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.07 : 21,557.61 = 8,547.49 : x
  2. Step 2: Convert to fraction form
    15,621.07/21,557.61 = 8,547.49/x
  3. Step 3: Cross multiply
    15,621.07x = 21,557.61 × 8,547.49
  4. Step 4: Simplify right side
    15,621.07x = 184,263,455.90
  5. Step 5: Solve for x
    x = 184,263,455.90/15,621.07
  6. Step 6: Final answer
    x = 11,795.83

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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.