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Finding the Fourth Proportional to 19,252.95, 28,866.93 and 12,659.16

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Solution

The fourth proportional to 19,252.95, 28,866.93 and 12,659.16 is: 18,980.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,252.95 : 28,866.93 = 12,659.16 : x
  2. Step 2: Convert to fraction form
    19,252.95/28,866.93 = 12,659.16/x
  3. Step 3: Cross multiply
    19,252.95x = 28,866.93 × 12,659.16
  4. Step 4: Simplify right side
    19,252.95x = 365,431,085.58
  5. Step 5: Solve for x
    x = 365,431,085.58/19,252.95
  6. Step 6: Final answer
    x = 18,980.52

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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.