Home / 23,050.29-31,809.05-12,978.70

Finding the Fourth Proportional to 23,050.29, 31,809.05 and 12,978.70

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Solution

The fourth proportional to 23,050.29, 31,809.05 and 12,978.70 is: 17,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,050.29 : 31,809.05 = 12,978.70 : x
  2. Step 2: Convert to fraction form
    23,050.29/31,809.05 = 12,978.70/x
  3. Step 3: Cross multiply
    23,050.29x = 31,809.05 × 12,978.70
  4. Step 4: Simplify right side
    23,050.29x = 412,840,117.24
  5. Step 5: Solve for x
    x = 412,840,117.24/23,050.29
  6. Step 6: Final answer
    x = 17,910.41

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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.