Home / 15,555.69-21,466.80-8,482.11

Finding the Fourth Proportional to 15,555.69, 21,466.80 and 8,482.11

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Solution

The fourth proportional to 15,555.69, 21,466.80 and 8,482.11 is: 11,705.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.69 : 21,466.80 = 8,482.11 : x
  2. Step 2: Convert to fraction form
    15,555.69/21,466.80 = 8,482.11/x
  3. Step 3: Cross multiply
    15,555.69x = 21,466.80 × 8,482.11
  4. Step 4: Simplify right side
    15,555.69x = 182,083,758.95
  5. Step 5: Solve for x
    x = 182,083,758.95/15,555.69
  6. Step 6: Final answer
    x = 11,705.28

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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.