Home / 21,032.04-31,490.58-20,474.36

Finding the Fourth Proportional to 21,032.04, 31,490.58 and 20,474.36

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Solution

The fourth proportional to 21,032.04, 31,490.58 and 20,474.36 is: 30,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.04 : 31,490.58 = 20,474.36 : x
  2. Step 2: Convert to fraction form
    21,032.04/31,490.58 = 20,474.36/x
  3. Step 3: Cross multiply
    21,032.04x = 31,490.58 × 20,474.36
  4. Step 4: Simplify right side
    21,032.04x = 644,749,471.53
  5. Step 5: Solve for x
    x = 644,749,471.53/21,032.04
  6. Step 6: Final answer
    x = 30,655.58

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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.