Home / 15,621.49-21,558.17-8,547.91

Finding the Fourth Proportional to 15,621.49, 21,558.17 and 8,547.91

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Solution

The fourth proportional to 15,621.49, 21,558.17 and 8,547.91 is: 11,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.49 : 21,558.17 = 8,547.91 : x
  2. Step 2: Convert to fraction form
    15,621.49/21,558.17 = 8,547.91/x
  3. Step 3: Cross multiply
    15,621.49x = 21,558.17 × 8,547.91
  4. Step 4: Simplify right side
    15,621.49x = 184,277,296.92
  5. Step 5: Solve for x
    x = 184,277,296.92/15,621.49
  6. Step 6: Final answer
    x = 11,796.40

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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.