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Finding the Fourth Proportional to 30,274.40, 45,419.70 and 21,526.40

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Solution

The fourth proportional to 30,274.40, 45,419.70 and 21,526.40 is: 32,295.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,274.40 : 45,419.70 = 21,526.40 : x
  2. Step 2: Convert to fraction form
    30,274.40/45,419.70 = 21,526.40/x
  3. Step 3: Cross multiply
    30,274.40x = 45,419.70 × 21,526.40
  4. Step 4: Simplify right side
    30,274.40x = 977,722,630.08
  5. Step 5: Solve for x
    x = 977,722,630.08/30,274.40
  6. Step 6: Final answer
    x = 32,295.36

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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.