Home / 31,090.77-42,905.30-16,943.63

Finding the Fourth Proportional to 31,090.77, 42,905.30 and 16,943.63

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Solution

The fourth proportional to 31,090.77, 42,905.30 and 16,943.63 is: 23,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,090.77 : 42,905.30 = 16,943.63 : x
  2. Step 2: Convert to fraction form
    31,090.77/42,905.30 = 16,943.63/x
  3. Step 3: Cross multiply
    31,090.77x = 42,905.30 × 16,943.63
  4. Step 4: Simplify right side
    31,090.77x = 726,971,228.99
  5. Step 5: Solve for x
    x = 726,971,228.99/31,090.77
  6. Step 6: Final answer
    x = 23,382.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.