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Finding the Fourth Proportional to 15,074.67, 20,802.93 and 8,360.31

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Solution

The fourth proportional to 15,074.67, 20,802.93 and 8,360.31 is: 11,537.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.67 : 20,802.93 = 8,360.31 : x
  2. Step 2: Convert to fraction form
    15,074.67/20,802.93 = 8,360.31/x
  3. Step 3: Cross multiply
    15,074.67x = 20,802.93 × 8,360.31
  4. Step 4: Simplify right side
    15,074.67x = 173,918,943.71
  5. Step 5: Solve for x
    x = 173,918,943.71/15,074.67
  6. Step 6: Final answer
    x = 11,537.16

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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.