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Finding the Fourth Proportional to 30,368.44, 45,559.40 and 9,311.40

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Solution

The fourth proportional to 30,368.44, 45,559.40 and 9,311.40 is: 13,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.44 : 45,559.40 = 9,311.40 : x
  2. Step 2: Convert to fraction form
    30,368.44/45,559.40 = 9,311.40/x
  3. Step 3: Cross multiply
    30,368.44x = 45,559.40 × 9,311.40
  4. Step 4: Simplify right side
    30,368.44x = 424,221,797.16
  5. Step 5: Solve for x
    x = 424,221,797.16/30,368.44
  6. Step 6: Final answer
    x = 13,969.17

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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.