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Finding the Fourth Proportional to 30,012.78, 45,024.03 and 9,236.28

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Solution

The fourth proportional to 30,012.78, 45,024.03 and 9,236.28 is: 13,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,012.78 : 45,024.03 = 9,236.28 : x
  2. Step 2: Convert to fraction form
    30,012.78/45,024.03 = 9,236.28/x
  3. Step 3: Cross multiply
    30,012.78x = 45,024.03 × 9,236.28
  4. Step 4: Simplify right side
    30,012.78x = 415,854,547.81
  5. Step 5: Solve for x
    x = 415,854,547.81/30,012.78
  6. Step 6: Final answer
    x = 13,855.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.