Home / 25,421.22-38,129.40-15,555.42

Finding the Fourth Proportional to 25,421.22, 38,129.40 and 15,555.42

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Solution

The fourth proportional to 25,421.22, 38,129.40 and 15,555.42 is: 23,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.22 : 38,129.40 = 15,555.42 : x
  2. Step 2: Convert to fraction form
    25,421.22/38,129.40 = 15,555.42/x
  3. Step 3: Cross multiply
    25,421.22x = 38,129.40 × 15,555.42
  4. Step 4: Simplify right side
    25,421.22x = 593,118,831.35
  5. Step 5: Solve for x
    x = 593,118,831.35/25,421.22
  6. Step 6: Final answer
    x = 23,331.64

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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.