Home / 31,035.20-42,828.90-16,888.01

Finding the Fourth Proportional to 31,035.20, 42,828.90 and 16,888.01

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Solution

The fourth proportional to 31,035.20, 42,828.90 and 16,888.01 is: 23,305.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,035.20 : 42,828.90 = 16,888.01 : x
  2. Step 2: Convert to fraction form
    31,035.20/42,828.90 = 16,888.01/x
  3. Step 3: Cross multiply
    31,035.20x = 42,828.90 × 16,888.01
  4. Step 4: Simplify right side
    31,035.20x = 723,294,891.49
  5. Step 5: Solve for x
    x = 723,294,891.49/31,035.20
  6. Step 6: Final answer
    x = 23,305.63

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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.