Home / 15,511.60-21,409.41-10,206.91

Finding the Fourth Proportional to 15,511.60, 21,409.41 and 10,206.91

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Solution

The fourth proportional to 15,511.60, 21,409.41 and 10,206.91 is: 14,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.60 : 21,409.41 = 10,206.91 : x
  2. Step 2: Convert to fraction form
    15,511.60/21,409.41 = 10,206.91/x
  3. Step 3: Cross multiply
    15,511.60x = 21,409.41 × 10,206.91
  4. Step 4: Simplify right side
    15,511.60x = 218,523,921.02
  5. Step 5: Solve for x
    x = 218,523,921.02/15,511.60
  6. Step 6: Final answer
    x = 14,087.77

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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.