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Finding the Fourth Proportional to 30,355.70, 45,534.90 and 10,364.90

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Solution

The fourth proportional to 30,355.70, 45,534.90 and 10,364.90 is: 15,547.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,355.70 : 45,534.90 = 10,364.90 : x
  2. Step 2: Convert to fraction form
    30,355.70/45,534.90 = 10,364.90/x
  3. Step 3: Cross multiply
    30,355.70x = 45,534.90 × 10,364.90
  4. Step 4: Simplify right side
    30,355.70x = 471,964,685.01
  5. Step 5: Solve for x
    x = 471,964,685.01/30,355.70
  6. Step 6: Final answer
    x = 15,547.81

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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.