Home / 19,200.02-28,800.05-12,655.43

Finding the Fourth Proportional to 19,200.02, 28,800.05 and 12,655.43

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Solution

The fourth proportional to 19,200.02, 28,800.05 and 12,655.43 is: 18,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.02 : 28,800.05 = 12,655.43 : x
  2. Step 2: Convert to fraction form
    19,200.02/28,800.05 = 12,655.43/x
  3. Step 3: Cross multiply
    19,200.02x = 28,800.05 × 12,655.43
  4. Step 4: Simplify right side
    19,200.02x = 364,477,016.77
  5. Step 5: Solve for x
    x = 364,477,016.77/19,200.02
  6. Step 6: Final answer
    x = 18,983.16

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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.