Home / 31,136.24-42,967.86-16,988.96

Finding the Fourth Proportional to 31,136.24, 42,967.86 and 16,988.96

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Solution

The fourth proportional to 31,136.24, 42,967.86 and 16,988.96 is: 23,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136.24 : 42,967.86 = 16,988.96 : x
  2. Step 2: Convert to fraction form
    31,136.24/42,967.86 = 16,988.96/x
  3. Step 3: Cross multiply
    31,136.24x = 42,967.86 × 16,988.96
  4. Step 4: Simplify right side
    31,136.24x = 729,979,254.83
  5. Step 5: Solve for x
    x = 729,979,254.83/31,136.24
  6. Step 6: Final answer
    x = 23,444.68

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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.