Home / 30,314.48-45,443.60-15,490.72

Finding the Fourth Proportional to 30,314.48, 45,443.60 and 15,490.72

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Solution

The fourth proportional to 30,314.48, 45,443.60 and 15,490.72 is: 23,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.48 : 45,443.60 = 15,490.72 : x
  2. Step 2: Convert to fraction form
    30,314.48/45,443.60 = 15,490.72/x
  3. Step 3: Cross multiply
    30,314.48x = 45,443.60 × 15,490.72
  4. Step 4: Simplify right side
    30,314.48x = 703,953,778.72
  5. Step 5: Solve for x
    x = 703,953,778.72/30,314.48
  6. Step 6: Final answer
    x = 23,221.70

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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.