Home / 15,706.30-21,678.45-8,995.81

Finding the Fourth Proportional to 15,706.30, 21,678.45 and 8,995.81

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Solution

The fourth proportional to 15,706.30, 21,678.45 and 8,995.81 is: 12,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.30 : 21,678.45 = 8,995.81 : x
  2. Step 2: Convert to fraction form
    15,706.30/21,678.45 = 8,995.81/x
  3. Step 3: Cross multiply
    15,706.30x = 21,678.45 × 8,995.81
  4. Step 4: Simplify right side
    15,706.30x = 195,015,217.29
  5. Step 5: Solve for x
    x = 195,015,217.29/15,706.30
  6. Step 6: Final answer
    x = 12,416.37

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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.