Home / 20,031.86-30,038.67-10,669.48

Finding the Fourth Proportional to 20,031.86, 30,038.67 and 10,669.48

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Solution

The fourth proportional to 20,031.86, 30,038.67 and 10,669.48 is: 15,999.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.86 : 30,038.67 = 10,669.48 : x
  2. Step 2: Convert to fraction form
    20,031.86/30,038.67 = 10,669.48/x
  3. Step 3: Cross multiply
    20,031.86x = 30,038.67 × 10,669.48
  4. Step 4: Simplify right side
    20,031.86x = 320,496,913.69
  5. Step 5: Solve for x
    x = 320,496,913.69/20,031.86
  6. Step 6: Final answer
    x = 15,999.36

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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.