Home / 15,624.70-21,539.63-11,140.65

Finding the Fourth Proportional to 15,624.70, 21,539.63 and 11,140.65

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Solution

The fourth proportional to 15,624.70, 21,539.63 and 11,140.65 is: 15,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624.70 : 21,539.63 = 11,140.65 : x
  2. Step 2: Convert to fraction form
    15,624.70/21,539.63 = 11,140.65/x
  3. Step 3: Cross multiply
    15,624.70x = 21,539.63 × 11,140.65
  4. Step 4: Simplify right side
    15,624.70x = 239,965,506.81
  5. Step 5: Solve for x
    x = 239,965,506.81/15,624.70
  6. Step 6: Final answer
    x = 15,358.09

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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.