Home / 22,729.80-31,368.40-13,778.08

Finding the Fourth Proportional to 22,729.80, 31,368.40 and 13,778.08

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Solution

The fourth proportional to 22,729.80, 31,368.40 and 13,778.08 is: 19,014.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,729.80 : 31,368.40 = 13,778.08 : x
  2. Step 2: Convert to fraction form
    22,729.80/31,368.40 = 13,778.08/x
  3. Step 3: Cross multiply
    22,729.80x = 31,368.40 × 13,778.08
  4. Step 4: Simplify right side
    22,729.80x = 432,196,324.67
  5. Step 5: Solve for x
    x = 432,196,324.67/22,729.80
  6. Step 6: Final answer
    x = 19,014.52

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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.