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Finding the Fourth Proportional to 30,307.80, 45,423.90 and 15,522.60

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Solution

The fourth proportional to 30,307.80, 45,423.90 and 15,522.60 is: 23,264.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.80 : 45,423.90 = 15,522.60 : x
  2. Step 2: Convert to fraction form
    30,307.80/45,423.90 = 15,522.60/x
  3. Step 3: Cross multiply
    30,307.80x = 45,423.90 × 15,522.60
  4. Step 4: Simplify right side
    30,307.80x = 705,097,030.14
  5. Step 5: Solve for x
    x = 705,097,030.14/30,307.80
  6. Step 6: Final answer
    x = 23,264.54

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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.