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Finding the Fourth Proportional to 35,880.30, 53,820.45 and 10,920.15

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Solution

The fourth proportional to 35,880.30, 53,820.45 and 10,920.15 is: 16,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,880.30 : 53,820.45 = 10,920.15 : x
  2. Step 2: Convert to fraction form
    35,880.30/53,820.45 = 10,920.15/x
  3. Step 3: Cross multiply
    35,880.30x = 53,820.45 × 10,920.15
  4. Step 4: Simplify right side
    35,880.30x = 587,727,387.07
  5. Step 5: Solve for x
    x = 587,727,387.07/35,880.30
  6. Step 6: Final answer
    x = 16,380.23

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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.