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Finding the Fourth Proportional to 35,920.71, 53,889.80 and 10,961.21

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Solution

The fourth proportional to 35,920.71, 53,889.80 and 10,961.21 is: 16,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,920.71 : 53,889.80 = 10,961.21 : x
  2. Step 2: Convert to fraction form
    35,920.71/53,889.80 = 10,961.21/x
  3. Step 3: Cross multiply
    35,920.71x = 53,889.80 × 10,961.21
  4. Step 4: Simplify right side
    35,920.71x = 590,697,090.40
  5. Step 5: Solve for x
    x = 590,697,090.40/35,920.71
  6. Step 6: Final answer
    x = 16,444.47

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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.