Home / 31,064.70-42,869.40-16,917.50

Finding the Fourth Proportional to 31,064.70, 42,869.40 and 16,917.50

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Solution

The fourth proportional to 31,064.70, 42,869.40 and 16,917.50 is: 23,346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,064.70 : 42,869.40 = 16,917.50 : x
  2. Step 2: Convert to fraction form
    31,064.70/42,869.40 = 16,917.50/x
  3. Step 3: Cross multiply
    31,064.70x = 42,869.40 × 16,917.50
  4. Step 4: Simplify right side
    31,064.70x = 725,243,074.50
  5. Step 5: Solve for x
    x = 725,243,074.50/31,064.70
  6. Step 6: Final answer
    x = 23,346.21

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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.