Home / 19,980.08-29,929.96-9,954.60

Finding the Fourth Proportional to 19,980.08, 29,929.96 and 9,954.60

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Solution

The fourth proportional to 19,980.08, 29,929.96 and 9,954.60 is: 14,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.08 : 29,929.96 = 9,954.60 : x
  2. Step 2: Convert to fraction form
    19,980.08/29,929.96 = 9,954.60/x
  3. Step 3: Cross multiply
    19,980.08x = 29,929.96 × 9,954.60
  4. Step 4: Simplify right side
    19,980.08x = 297,940,779.82
  5. Step 5: Solve for x
    x = 297,940,779.82/19,980.08
  6. Step 6: Final answer
    x = 14,911.89

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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.