Home / 15,563.69-21,477.66-8,490.11

Finding the Fourth Proportional to 15,563.69, 21,477.66 and 8,490.11

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Solution

The fourth proportional to 15,563.69, 21,477.66 and 8,490.11 is: 11,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.69 : 21,477.66 = 8,490.11 : x
  2. Step 2: Convert to fraction form
    15,563.69/21,477.66 = 8,490.11/x
  3. Step 3: Cross multiply
    15,563.69x = 21,477.66 × 8,490.11
  4. Step 4: Simplify right side
    15,563.69x = 182,347,588.55
  5. Step 5: Solve for x
    x = 182,347,588.55/15,563.69
  6. Step 6: Final answer
    x = 11,716.22

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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.