Home / 31,136.25-42,967.63-16,988.19

Finding the Fourth Proportional to 31,136.25, 42,967.63 and 16,988.19

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Solution

The fourth proportional to 31,136.25, 42,967.63 and 16,988.19 is: 23,443.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136.25 : 42,967.63 = 16,988.19 : x
  2. Step 2: Convert to fraction form
    31,136.25/42,967.63 = 16,988.19/x
  3. Step 3: Cross multiply
    31,136.25x = 42,967.63 × 16,988.19
  4. Step 4: Simplify right side
    31,136.25x = 729,942,262.29
  5. Step 5: Solve for x
    x = 729,942,262.29/31,136.25
  6. Step 6: Final answer
    x = 23,443.49

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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.