Home / 20,031.52-30,021.36-9,637.60

Finding the Fourth Proportional to 20,031.52, 30,021.36 and 9,637.60

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Solution

The fourth proportional to 20,031.52, 30,021.36 and 9,637.60 is: 14,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.52 : 30,021.36 = 9,637.60 : x
  2. Step 2: Convert to fraction form
    20,031.52/30,021.36 = 9,637.60/x
  3. Step 3: Cross multiply
    20,031.52x = 30,021.36 × 9,637.60
  4. Step 4: Simplify right side
    20,031.52x = 289,333,859.14
  5. Step 5: Solve for x
    x = 289,333,859.14/20,031.52
  6. Step 6: Final answer
    x = 14,443.93

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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.