Home / 19,973.20-29,959.80-12,553.60

Finding the Fourth Proportional to 19,973.20, 29,959.80 and 12,553.60

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Solution

The fourth proportional to 19,973.20, 29,959.80 and 12,553.60 is: 18,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,973.20 : 29,959.80 = 12,553.60 : x
  2. Step 2: Convert to fraction form
    19,973.20/29,959.80 = 12,553.60/x
  3. Step 3: Cross multiply
    19,973.20x = 29,959.80 × 12,553.60
  4. Step 4: Simplify right side
    19,973.20x = 376,103,345.28
  5. Step 5: Solve for x
    x = 376,103,345.28/19,973.20
  6. Step 6: Final answer
    x = 18,830.40

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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.