Home / 31,045.90-42,842.64-16,898.44

Finding the Fourth Proportional to 31,045.90, 42,842.64 and 16,898.44

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Solution

The fourth proportional to 31,045.90, 42,842.64 and 16,898.44 is: 23,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,045.90 : 42,842.64 = 16,898.44 : x
  2. Step 2: Convert to fraction form
    31,045.90/42,842.64 = 16,898.44/x
  3. Step 3: Cross multiply
    31,045.90x = 42,842.64 × 16,898.44
  4. Step 4: Simplify right side
    31,045.90x = 723,973,781.48
  5. Step 5: Solve for x
    x = 723,973,781.48/31,045.90
  6. Step 6: Final answer
    x = 23,319.47

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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.