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Finding the Fourth Proportional to 30,503.55, 45,753.98 and 8,316.93

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Solution

The fourth proportional to 30,503.55, 45,753.98 and 8,316.93 is: 12,475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.55 : 45,753.98 = 8,316.93 : x
  2. Step 2: Convert to fraction form
    30,503.55/45,753.98 = 8,316.93/x
  3. Step 3: Cross multiply
    30,503.55x = 45,753.98 × 8,316.93
  4. Step 4: Simplify right side
    30,503.55x = 380,532,607.30
  5. Step 5: Solve for x
    x = 380,532,607.30/30,503.55
  6. Step 6: Final answer
    x = 12,475.03

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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.