Home / 31,035.84-42,830.36-16,889.59

Finding the Fourth Proportional to 31,035.84, 42,830.36 and 16,889.59

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Solution

The fourth proportional to 31,035.84, 42,830.36 and 16,889.59 is: 23,308.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,035.84 : 42,830.36 = 16,889.59 : x
  2. Step 2: Convert to fraction form
    31,035.84/42,830.36 = 16,889.59/x
  3. Step 3: Cross multiply
    31,035.84x = 42,830.36 × 16,889.59
  4. Step 4: Simplify right side
    31,035.84x = 723,387,219.95
  5. Step 5: Solve for x
    x = 723,387,219.95/31,035.84
  6. Step 6: Final answer
    x = 23,308.12

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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.