Home / 31,066.12-42,869.76-16,918.88

Finding the Fourth Proportional to 31,066.12, 42,869.76 and 16,918.88

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Solution

The fourth proportional to 31,066.12, 42,869.76 and 16,918.88 is: 23,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,066.12 : 42,869.76 = 16,918.88 : x
  2. Step 2: Convert to fraction form
    31,066.12/42,869.76 = 16,918.88/x
  3. Step 3: Cross multiply
    31,066.12x = 42,869.76 × 16,918.88
  4. Step 4: Simplify right side
    31,066.12x = 725,308,325.07
  5. Step 5: Solve for x
    x = 725,308,325.07/31,066.12
  6. Step 6: Final answer
    x = 23,347.25

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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.