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Finding the Fourth Proportional to 30,347.50, 45,528.93 and 8,459.50

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Solution

The fourth proportional to 30,347.50, 45,528.93 and 8,459.50 is: 12,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.50 : 45,528.93 = 8,459.50 : x
  2. Step 2: Convert to fraction form
    30,347.50/45,528.93 = 8,459.50/x
  3. Step 3: Cross multiply
    30,347.50x = 45,528.93 × 8,459.50
  4. Step 4: Simplify right side
    30,347.50x = 385,151,983.34
  5. Step 5: Solve for x
    x = 385,151,983.34/30,347.50
  6. Step 6: Final answer
    x = 12,691.39

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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.