Home / 31,035.81-42,829.62-16,888.76

Finding the Fourth Proportional to 31,035.81, 42,829.62 and 16,888.76

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Solution

The fourth proportional to 31,035.81, 42,829.62 and 16,888.76 is: 23,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,035.81 : 42,829.62 = 16,888.76 : x
  2. Step 2: Convert to fraction form
    31,035.81/42,829.62 = 16,888.76/x
  3. Step 3: Cross multiply
    31,035.81x = 42,829.62 × 16,888.76
  4. Step 4: Simplify right side
    31,035.81x = 723,339,173.07
  5. Step 5: Solve for x
    x = 723,339,173.07/31,035.81
  6. Step 6: Final answer
    x = 23,306.60

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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.