Home / 15,624.50-21,539.37-11,140.47

Finding the Fourth Proportional to 15,624.50, 21,539.37 and 11,140.47

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Solution

The fourth proportional to 15,624.50, 21,539.37 and 11,140.47 is: 15,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624.50 : 21,539.37 = 11,140.47 : x
  2. Step 2: Convert to fraction form
    15,624.50/21,539.37 = 11,140.47/x
  3. Step 3: Cross multiply
    15,624.50x = 21,539.37 × 11,140.47
  4. Step 4: Simplify right side
    15,624.50x = 239,958,705.30
  5. Step 5: Solve for x
    x = 239,958,705.30/15,624.50
  6. Step 6: Final answer
    x = 15,357.85

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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.