Home / 13,831.04-19,081.42-7,779.88

Finding the Fourth Proportional to 13,831.04, 19,081.42 and 7,779.88

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Solution

The fourth proportional to 13,831.04, 19,081.42 and 7,779.88 is: 10,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.04 : 19,081.42 = 7,779.88 : x
  2. Step 2: Convert to fraction form
    13,831.04/19,081.42 = 7,779.88/x
  3. Step 3: Cross multiply
    13,831.04x = 19,081.42 × 7,779.88
  4. Step 4: Simplify right side
    13,831.04x = 148,451,157.83
  5. Step 5: Solve for x
    x = 148,451,157.83/13,831.04
  6. Step 6: Final answer
    x = 10,733.19

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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.