Home / 15,376.15-21,218.99-8,663.93

Finding the Fourth Proportional to 15,376.15, 21,218.99 and 8,663.93

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Solution

The fourth proportional to 15,376.15, 21,218.99 and 8,663.93 is: 11,956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.15 : 21,218.99 = 8,663.93 : x
  2. Step 2: Convert to fraction form
    15,376.15/21,218.99 = 8,663.93/x
  3. Step 3: Cross multiply
    15,376.15x = 21,218.99 × 8,663.93
  4. Step 4: Simplify right side
    15,376.15x = 183,839,891.11
  5. Step 5: Solve for x
    x = 183,839,891.11/15,376.15
  6. Step 6: Final answer
    x = 11,956.18

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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.