Home / 15,291.06-21,100.95-9,002.22

Finding the Fourth Proportional to 15,291.06, 21,100.95 and 9,002.22

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Solution

The fourth proportional to 15,291.06, 21,100.95 and 9,002.22 is: 12,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.06 : 21,100.95 = 9,002.22 : x
  2. Step 2: Convert to fraction form
    15,291.06/21,100.95 = 9,002.22/x
  3. Step 3: Cross multiply
    15,291.06x = 21,100.95 × 9,002.22
  4. Step 4: Simplify right side
    15,291.06x = 189,955,394.11
  5. Step 5: Solve for x
    x = 189,955,394.11/15,291.06
  6. Step 6: Final answer
    x = 12,422.64

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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.