Home / 19,900.80-29,822.40-13,737.60

Finding the Fourth Proportional to 19,900.80, 29,822.40 and 13,737.60

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Solution

The fourth proportional to 19,900.80, 29,822.40 and 13,737.60 is: 20,586.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.80 : 29,822.40 = 13,737.60 : x
  2. Step 2: Convert to fraction form
    19,900.80/29,822.40 = 13,737.60/x
  3. Step 3: Cross multiply
    19,900.80x = 29,822.40 × 13,737.60
  4. Step 4: Simplify right side
    19,900.80x = 409,688,202.24
  5. Step 5: Solve for x
    x = 409,688,202.24/19,900.80
  6. Step 6: Final answer
    x = 20,586.52

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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.