Home / 21,059.08-31,590.78-7,209.16

Finding the Fourth Proportional to 21,059.08, 31,590.78 and 7,209.16

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Solution

The fourth proportional to 21,059.08, 31,590.78 and 7,209.16 is: 10,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.08 : 31,590.78 = 7,209.16 : x
  2. Step 2: Convert to fraction form
    21,059.08/31,590.78 = 7,209.16/x
  3. Step 3: Cross multiply
    21,059.08x = 31,590.78 × 7,209.16
  4. Step 4: Simplify right side
    21,059.08x = 227,742,987.54
  5. Step 5: Solve for x
    x = 227,742,987.54/21,059.08
  6. Step 6: Final answer
    x = 10,814.48

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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.