Home / 31,135.58-42,967.08-16,988.42

Finding the Fourth Proportional to 31,135.58, 42,967.08 and 16,988.42

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Solution

The fourth proportional to 31,135.58, 42,967.08 and 16,988.42 is: 23,444.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.58 : 42,967.08 = 16,988.42 : x
  2. Step 2: Convert to fraction form
    31,135.58/42,967.08 = 16,988.42/x
  3. Step 3: Cross multiply
    31,135.58x = 42,967.08 × 16,988.42
  4. Step 4: Simplify right side
    31,135.58x = 729,942,801.21
  5. Step 5: Solve for x
    x = 729,942,801.21/31,135.58
  6. Step 6: Final answer
    x = 23,444.01

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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.