Home / 30,432.19-45,647.67-13,789.12

Finding the Fourth Proportional to 30,432.19, 45,647.67 and 13,789.12

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Solution

The fourth proportional to 30,432.19, 45,647.67 and 13,789.12 is: 20,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,432.19 : 45,647.67 = 13,789.12 : x
  2. Step 2: Convert to fraction form
    30,432.19/45,647.67 = 13,789.12/x
  3. Step 3: Cross multiply
    30,432.19x = 45,647.67 × 13,789.12
  4. Step 4: Simplify right side
    30,432.19x = 629,441,085.23
  5. Step 5: Solve for x
    x = 629,441,085.23/30,432.19
  6. Step 6: Final answer
    x = 20,683.40

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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.