Home / 38,945.40-58,420.18-12,648.22

Finding the Fourth Proportional to 38,945.40, 58,420.18 and 12,648.22

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Solution

The fourth proportional to 38,945.40, 58,420.18 and 12,648.22 is: 18,973.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,945.40 : 58,420.18 = 12,648.22 : x
  2. Step 2: Convert to fraction form
    38,945.40/58,420.18 = 12,648.22/x
  3. Step 3: Cross multiply
    38,945.40x = 58,420.18 × 12,648.22
  4. Step 4: Simplify right side
    38,945.40x = 738,911,289.08
  5. Step 5: Solve for x
    x = 738,911,289.08/38,945.40
  6. Step 6: Final answer
    x = 18,973.01

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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.