Home / 19,406.60-29,052.30-12,840.20

Finding the Fourth Proportional to 19,406.60, 29,052.30 and 12,840.20

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Solution

The fourth proportional to 19,406.60, 29,052.30 and 12,840.20 is: 19,222.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.60 : 29,052.30 = 12,840.20 : x
  2. Step 2: Convert to fraction form
    19,406.60/29,052.30 = 12,840.20/x
  3. Step 3: Cross multiply
    19,406.60x = 29,052.30 × 12,840.20
  4. Step 4: Simplify right side
    19,406.60x = 373,037,342.46
  5. Step 5: Solve for x
    x = 373,037,342.46/19,406.60
  6. Step 6: Final answer
    x = 19,222.19

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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.