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Finding the Fourth Proportional to 11,291.06, 15,572.04 and 8,929.10

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Solution

The fourth proportional to 11,291.06, 15,572.04 and 8,929.10 is: 12,314.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.06 : 15,572.04 = 8,929.10 : x
  2. Step 2: Convert to fraction form
    11,291.06/15,572.04 = 8,929.10/x
  3. Step 3: Cross multiply
    11,291.06x = 15,572.04 × 8,929.10
  4. Step 4: Simplify right side
    11,291.06x = 139,044,302.36
  5. Step 5: Solve for x
    x = 139,044,302.36/11,291.06
  6. Step 6: Final answer
    x = 12,314.55

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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.