Home / 21,002.06-28,984.16-11,570.62

Finding the Fourth Proportional to 21,002.06, 28,984.16 and 11,570.62

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Solution

The fourth proportional to 21,002.06, 28,984.16 and 11,570.62 is: 15,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.06 : 28,984.16 = 11,570.62 : x
  2. Step 2: Convert to fraction form
    21,002.06/28,984.16 = 11,570.62/x
  3. Step 3: Cross multiply
    21,002.06x = 28,984.16 × 11,570.62
  4. Step 4: Simplify right side
    21,002.06x = 335,364,701.38
  5. Step 5: Solve for x
    x = 335,364,701.38/21,002.06
  6. Step 6: Final answer
    x = 15,968.18

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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.