Home / 21,089.03-31,637.39-7,047.72

Finding the Fourth Proportional to 21,089.03, 31,637.39 and 7,047.72

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Solution

The fourth proportional to 21,089.03, 31,637.39 and 7,047.72 is: 10,572.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.03 : 31,637.39 = 7,047.72 : x
  2. Step 2: Convert to fraction form
    21,089.03/31,637.39 = 7,047.72/x
  3. Step 3: Cross multiply
    21,089.03x = 31,637.39 × 7,047.72
  4. Step 4: Simplify right side
    21,089.03x = 222,971,466.25
  5. Step 5: Solve for x
    x = 222,971,466.25/21,089.03
  6. Step 6: Final answer
    x = 10,572.86

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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.