Home / 30,095.22-45,148.86-20,739.72

Finding the Fourth Proportional to 30,095.22, 45,148.86 and 20,739.72

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Solution

The fourth proportional to 30,095.22, 45,148.86 and 20,739.72 is: 31,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,095.22 : 45,148.86 = 20,739.72 : x
  2. Step 2: Convert to fraction form
    30,095.22/45,148.86 = 20,739.72/x
  3. Step 3: Cross multiply
    30,095.22x = 45,148.86 × 20,739.72
  4. Step 4: Simplify right side
    30,095.22x = 936,374,714.72
  5. Step 5: Solve for x
    x = 936,374,714.72/30,095.22
  6. Step 6: Final answer
    x = 31,113.74

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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.