Home / 19,922.40-29,883.60-13,312.80

Finding the Fourth Proportional to 19,922.40, 29,883.60 and 13,312.80

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Solution

The fourth proportional to 19,922.40, 29,883.60 and 13,312.80 is: 19,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,922.40 : 29,883.60 = 13,312.80 : x
  2. Step 2: Convert to fraction form
    19,922.40/29,883.60 = 13,312.80/x
  3. Step 3: Cross multiply
    19,922.40x = 29,883.60 × 13,312.80
  4. Step 4: Simplify right side
    19,922.40x = 397,834,390.08
  5. Step 5: Solve for x
    x = 397,834,390.08/19,922.40
  6. Step 6: Final answer
    x = 19,969.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.