Home / 21,002.06-28,982.84-11,570.62

Finding the Fourth Proportional to 21,002.06, 28,982.84 and 11,570.62

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Solution

The fourth proportional to 21,002.06, 28,982.84 and 11,570.62 is: 15,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.06 : 28,982.84 = 11,570.62 : x
  2. Step 2: Convert to fraction form
    21,002.06/28,982.84 = 11,570.62/x
  3. Step 3: Cross multiply
    21,002.06x = 28,982.84 × 11,570.62
  4. Step 4: Simplify right side
    21,002.06x = 335,349,428.16
  5. Step 5: Solve for x
    x = 335,349,428.16/21,002.06
  6. Step 6: Final answer
    x = 15,967.45

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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.