Home / 23,019.89-31,768.40-12,948.80

Finding the Fourth Proportional to 23,019.89, 31,768.40 and 12,948.80

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Solution

The fourth proportional to 23,019.89, 31,768.40 and 12,948.80 is: 17,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,019.89 : 31,768.40 = 12,948.80 : x
  2. Step 2: Convert to fraction form
    23,019.89/31,768.40 = 12,948.80/x
  3. Step 3: Cross multiply
    23,019.89x = 31,768.40 × 12,948.80
  4. Step 4: Simplify right side
    23,019.89x = 411,362,657.92
  5. Step 5: Solve for x
    x = 411,362,657.92/23,019.89
  6. Step 6: Final answer
    x = 17,869.88

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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.