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Finding the Fourth Proportional to 35,485.28, 53,213.28 and 12,113.60

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Solution

The fourth proportional to 35,485.28, 53,213.28 and 12,113.60 is: 18,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,485.28 : 53,213.28 = 12,113.60 : x
  2. Step 2: Convert to fraction form
    35,485.28/53,213.28 = 12,113.60/x
  3. Step 3: Cross multiply
    35,485.28x = 53,213.28 × 12,113.60
  4. Step 4: Simplify right side
    35,485.28x = 644,604,388.61
  5. Step 5: Solve for x
    x = 644,604,388.61/35,485.28
  6. Step 6: Final answer
    x = 18,165.40

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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.