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Finding the Fourth Proportional to 15,003.76, 20,699.94 and 9,030.82

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Solution

The fourth proportional to 15,003.76, 20,699.94 and 9,030.82 is: 12,459.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.76 : 20,699.94 = 9,030.82 : x
  2. Step 2: Convert to fraction form
    15,003.76/20,699.94 = 9,030.82/x
  3. Step 3: Cross multiply
    15,003.76x = 20,699.94 × 9,030.82
  4. Step 4: Simplify right side
    15,003.76x = 186,937,432.15
  5. Step 5: Solve for x
    x = 186,937,432.15/15,003.76
  6. Step 6: Final answer
    x = 12,459.37

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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.