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Finding the Fourth Proportional to 19,214.77, 28,807.80 and 12,957.22

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Solution

The fourth proportional to 19,214.77, 28,807.80 and 12,957.22 is: 19,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,214.77 : 28,807.80 = 12,957.22 : x
  2. Step 2: Convert to fraction form
    19,214.77/28,807.80 = 12,957.22/x
  3. Step 3: Cross multiply
    19,214.77x = 28,807.80 × 12,957.22
  4. Step 4: Simplify right side
    19,214.77x = 373,268,900.58
  5. Step 5: Solve for x
    x = 373,268,900.58/19,214.77
  6. Step 6: Final answer
    x = 19,426.15

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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.