Home / 31,127.63-42,956.25-16,980.77

Finding the Fourth Proportional to 31,127.63, 42,956.25 and 16,980.77

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Solution

The fourth proportional to 31,127.63, 42,956.25 and 16,980.77 is: 23,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.63 : 42,956.25 = 16,980.77 : x
  2. Step 2: Convert to fraction form
    31,127.63/42,956.25 = 16,980.77/x
  3. Step 3: Cross multiply
    31,127.63x = 42,956.25 × 16,980.77
  4. Step 4: Simplify right side
    31,127.63x = 729,429,986.53
  5. Step 5: Solve for x
    x = 729,429,986.53/31,127.63
  6. Step 6: Final answer
    x = 23,433.53

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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.