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Finding the Fourth Proportional to 35,612.80, 53,424.96 and 15,890.88

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Solution

The fourth proportional to 35,612.80, 53,424.96 and 15,890.88 is: 23,838.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,612.80 : 53,424.96 = 15,890.88 : x
  2. Step 2: Convert to fraction form
    35,612.80/53,424.96 = 15,890.88/x
  3. Step 3: Cross multiply
    35,612.80x = 53,424.96 × 15,890.88
  4. Step 4: Simplify right side
    35,612.80x = 848,969,628.36
  5. Step 5: Solve for x
    x = 848,969,628.36/35,612.80
  6. Step 6: Final answer
    x = 23,838.89

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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.