Home / 21,110.16-31,666.74-6,317.88

Finding the Fourth Proportional to 21,110.16, 31,666.74 and 6,317.88

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Solution

The fourth proportional to 21,110.16, 31,666.74 and 6,317.88 is: 9,477.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.16 : 31,666.74 = 6,317.88 : x
  2. Step 2: Convert to fraction form
    21,110.16/31,666.74 = 6,317.88/x
  3. Step 3: Cross multiply
    21,110.16x = 31,666.74 × 6,317.88
  4. Step 4: Simplify right side
    21,110.16x = 200,066,663.31
  5. Step 5: Solve for x
    x = 200,066,663.31/21,110.16
  6. Step 6: Final answer
    x = 9,477.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.