Home / 31,025.84-42,814.40-16,878.74

Finding the Fourth Proportional to 31,025.84, 42,814.40 and 16,878.74

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Solution

The fourth proportional to 31,025.84, 42,814.40 and 16,878.74 is: 23,291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.84 : 42,814.40 = 16,878.74 : x
  2. Step 2: Convert to fraction form
    31,025.84/42,814.40 = 16,878.74/x
  3. Step 3: Cross multiply
    31,025.84x = 42,814.40 × 16,878.74
  4. Step 4: Simplify right side
    31,025.84x = 722,653,125.86
  5. Step 5: Solve for x
    x = 722,653,125.86/31,025.84
  6. Step 6: Final answer
    x = 23,291.98

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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.