Home / 15,705.70-21,677.59-8,995.19

Finding the Fourth Proportional to 15,705.70, 21,677.59 and 8,995.19

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Solution

The fourth proportional to 15,705.70, 21,677.59 and 8,995.19 is: 12,415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.70 : 21,677.59 = 8,995.19 : x
  2. Step 2: Convert to fraction form
    15,705.70/21,677.59 = 8,995.19/x
  3. Step 3: Cross multiply
    15,705.70x = 21,677.59 × 8,995.19
  4. Step 4: Simplify right side
    15,705.70x = 194,993,943.65
  5. Step 5: Solve for x
    x = 194,993,943.65/15,705.70
  6. Step 6: Final answer
    x = 12,415.49

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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.