Home / 15,705.26-21,672.48-8,631.94

Finding the Fourth Proportional to 15,705.26, 21,672.48 and 8,631.94

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Solution

The fourth proportional to 15,705.26, 21,672.48 and 8,631.94 is: 11,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.26 : 21,672.48 = 8,631.94 : x
  2. Step 2: Convert to fraction form
    15,705.26/21,672.48 = 8,631.94/x
  3. Step 3: Cross multiply
    15,705.26x = 21,672.48 × 8,631.94
  4. Step 4: Simplify right side
    15,705.26x = 187,075,547.01
  5. Step 5: Solve for x
    x = 187,075,547.01/15,705.26
  6. Step 6: Final answer
    x = 11,911.65

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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.