Home / 31,127.58-42,955.34-16,980.92

Finding the Fourth Proportional to 31,127.58, 42,955.34 and 16,980.92

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Solution

The fourth proportional to 31,127.58, 42,955.34 and 16,980.92 is: 23,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.58 : 42,955.34 = 16,980.92 : x
  2. Step 2: Convert to fraction form
    31,127.58/42,955.34 = 16,980.92/x
  3. Step 3: Cross multiply
    31,127.58x = 42,955.34 × 16,980.92
  4. Step 4: Simplify right side
    31,127.58x = 729,421,192.11
  5. Step 5: Solve for x
    x = 729,421,192.11/31,127.58
  6. Step 6: Final answer
    x = 23,433.28

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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.