Home / 21,004.27-31,500.93-9,908.03

Finding the Fourth Proportional to 21,004.27, 31,500.93 and 9,908.03

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Solution

The fourth proportional to 21,004.27, 31,500.93 and 9,908.03 is: 14,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.27 : 31,500.93 = 9,908.03 : x
  2. Step 2: Convert to fraction form
    21,004.27/31,500.93 = 9,908.03/x
  3. Step 3: Cross multiply
    21,004.27x = 31,500.93 × 9,908.03
  4. Step 4: Simplify right side
    21,004.27x = 312,112,159.47
  5. Step 5: Solve for x
    x = 312,112,159.47/21,004.27
  6. Step 6: Final answer
    x = 14,859.46

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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.