Home / 12,032.40-18,037.80-10,720.20

Finding the Fourth Proportional to 12,032.40, 18,037.80 and 10,720.20

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Solution

The fourth proportional to 12,032.40, 18,037.80 and 10,720.20 is: 16,070.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,032.40 : 18,037.80 = 10,720.20 : x
  2. Step 2: Convert to fraction form
    12,032.40/18,037.80 = 10,720.20/x
  3. Step 3: Cross multiply
    12,032.40x = 18,037.80 × 10,720.20
  4. Step 4: Simplify right side
    12,032.40x = 193,368,823.56
  5. Step 5: Solve for x
    x = 193,368,823.56/12,032.40
  6. Step 6: Final answer
    x = 16,070.68

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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.