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Finding the Fourth Proportional to 30,612.16, 45,888.88 and 9,821.44

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Solution

The fourth proportional to 30,612.16, 45,888.88 and 9,821.44 is: 14,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.16 : 45,888.88 = 9,821.44 : x
  2. Step 2: Convert to fraction form
    30,612.16/45,888.88 = 9,821.44/x
  3. Step 3: Cross multiply
    30,612.16x = 45,888.88 × 9,821.44
  4. Step 4: Simplify right side
    30,612.16x = 450,694,881.59
  5. Step 5: Solve for x
    x = 450,694,881.59/30,612.16
  6. Step 6: Final answer
    x = 14,722.74

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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.