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Finding the Fourth Proportional to 30,019.68, 45,029.52 and 9,243

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Solution

The fourth proportional to 30,019.68, 45,029.52 and 9,243 is: 13,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.68 : 45,029.52 = 9,243 : x
  2. Step 2: Convert to fraction form
    30,019.68/45,029.52 = 9,243/x
  3. Step 3: Cross multiply
    30,019.68x = 45,029.52 × 9,243
  4. Step 4: Simplify right side
    30,019.68x = 416,207,853.36
  5. Step 5: Solve for x
    x = 416,207,853.36/30,019.68
  6. Step 6: Final answer
    x = 13,864.50

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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.