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Finding the Fourth Proportional to 15,030.66, 20,747.43 and 8,748.30

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Solution

The fourth proportional to 15,030.66, 20,747.43 and 8,748.30 is: 12,075.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.66 : 20,747.43 = 8,748.30 : x
  2. Step 2: Convert to fraction form
    15,030.66/20,747.43 = 8,748.30/x
  3. Step 3: Cross multiply
    15,030.66x = 20,747.43 × 8,748.30
  4. Step 4: Simplify right side
    15,030.66x = 181,504,741.87
  5. Step 5: Solve for x
    x = 181,504,741.87/15,030.66
  6. Step 6: Final answer
    x = 12,075.63

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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.