Home / 17,715.40-26,582.70-7,856.20

Finding the Fourth Proportional to 17,715.40, 26,582.70 and 7,856.20

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Solution

The fourth proportional to 17,715.40, 26,582.70 and 7,856.20 is: 11,788.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,715.40 : 26,582.70 = 7,856.20 : x
  2. Step 2: Convert to fraction form
    17,715.40/26,582.70 = 7,856.20/x
  3. Step 3: Cross multiply
    17,715.40x = 26,582.70 × 7,856.20
  4. Step 4: Simplify right side
    17,715.40x = 208,839,007.74
  5. Step 5: Solve for x
    x = 208,839,007.74/17,715.40
  6. Step 6: Final answer
    x = 11,788.56

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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.