Home / 21,069.70-31,595.03-11,206.87

Finding the Fourth Proportional to 21,069.70, 31,595.03 and 11,206.87

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Solution

The fourth proportional to 21,069.70, 31,595.03 and 11,206.87 is: 16,805.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.70 : 31,595.03 = 11,206.87 : x
  2. Step 2: Convert to fraction form
    21,069.70/31,595.03 = 11,206.87/x
  3. Step 3: Cross multiply
    21,069.70x = 31,595.03 × 11,206.87
  4. Step 4: Simplify right side
    21,069.70x = 354,081,421.87
  5. Step 5: Solve for x
    x = 354,081,421.87/21,069.70
  6. Step 6: Final answer
    x = 16,805.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.