Home / 15,779.49-21,776.16-9,066.42

Finding the Fourth Proportional to 15,779.49, 21,776.16 and 9,066.42

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Solution

The fourth proportional to 15,779.49, 21,776.16 and 9,066.42 is: 12,511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.49 : 21,776.16 = 9,066.42 : x
  2. Step 2: Convert to fraction form
    15,779.49/21,776.16 = 9,066.42/x
  3. Step 3: Cross multiply
    15,779.49x = 21,776.16 × 9,066.42
  4. Step 4: Simplify right side
    15,779.49x = 197,431,812.55
  5. Step 5: Solve for x
    x = 197,431,812.55/15,779.49
  6. Step 6: Final answer
    x = 12,511.93

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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.