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Finding the Fourth Proportional to 30,503.40, 45,718.65 and 15,704.70

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Solution

The fourth proportional to 30,503.40, 45,718.65 and 15,704.70 is: 23,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.40 : 45,718.65 = 15,704.70 : x
  2. Step 2: Convert to fraction form
    30,503.40/45,718.65 = 15,704.70/x
  3. Step 3: Cross multiply
    30,503.40x = 45,718.65 × 15,704.70
  4. Step 4: Simplify right side
    30,503.40x = 717,997,682.66
  5. Step 5: Solve for x
    x = 717,997,682.66/30,503.40
  6. Step 6: Final answer
    x = 23,538.28

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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.