Home / 14,215.58-19,618.70-7,842.76

Finding the Fourth Proportional to 14,215.58, 19,618.70 and 7,842.76

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Solution

The fourth proportional to 14,215.58, 19,618.70 and 7,842.76 is: 10,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.58 : 19,618.70 = 7,842.76 : x
  2. Step 2: Convert to fraction form
    14,215.58/19,618.70 = 7,842.76/x
  3. Step 3: Cross multiply
    14,215.58x = 19,618.70 × 7,842.76
  4. Step 4: Simplify right side
    14,215.58x = 153,864,755.61
  5. Step 5: Solve for x
    x = 153,864,755.61/14,215.58
  6. Step 6: Final answer
    x = 10,823.67

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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.