Home / 15,536.36-21,439.43-8,821.10

Finding the Fourth Proportional to 15,536.36, 21,439.43 and 8,821.10

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Solution

The fourth proportional to 15,536.36, 21,439.43 and 8,821.10 is: 12,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,536.36 : 21,439.43 = 8,821.10 : x
  2. Step 2: Convert to fraction form
    15,536.36/21,439.43 = 8,821.10/x
  3. Step 3: Cross multiply
    15,536.36x = 21,439.43 × 8,821.10
  4. Step 4: Simplify right side
    15,536.36x = 189,119,448.16
  5. Step 5: Solve for x
    x = 189,119,448.16/15,536.36
  6. Step 6: Final answer
    x = 12,172.70

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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.