Home / 21,293.04-31,913.10-13,504.08

Finding the Fourth Proportional to 21,293.04, 31,913.10 and 13,504.08

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Solution

The fourth proportional to 21,293.04, 31,913.10 and 13,504.08 is: 20,239.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.04 : 31,913.10 = 13,504.08 : x
  2. Step 2: Convert to fraction form
    21,293.04/31,913.10 = 13,504.08/x
  3. Step 3: Cross multiply
    21,293.04x = 31,913.10 × 13,504.08
  4. Step 4: Simplify right side
    21,293.04x = 430,957,055.45
  5. Step 5: Solve for x
    x = 430,957,055.45/21,293.04
  6. Step 6: Final answer
    x = 20,239.34

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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.