Home / 15,511.27-21,406.71-8,798.08

Finding the Fourth Proportional to 15,511.27, 21,406.71 and 8,798.08

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Solution

The fourth proportional to 15,511.27, 21,406.71 and 8,798.08 is: 12,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.27 : 21,406.71 = 8,798.08 : x
  2. Step 2: Convert to fraction form
    15,511.27/21,406.71 = 8,798.08/x
  3. Step 3: Cross multiply
    15,511.27x = 21,406.71 × 8,798.08
  4. Step 4: Simplify right side
    15,511.27x = 188,337,947.12
  5. Step 5: Solve for x
    x = 188,337,947.12/15,511.27
  6. Step 6: Final answer
    x = 12,142.01

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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.