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Finding the Fourth Proportional to 19,302.84, 28,959.66 and 12,741.84

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Solution

The fourth proportional to 19,302.84, 28,959.66 and 12,741.84 is: 19,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,302.84 : 28,959.66 = 12,741.84 : x
  2. Step 2: Convert to fraction form
    19,302.84/28,959.66 = 12,741.84/x
  3. Step 3: Cross multiply
    19,302.84x = 28,959.66 × 12,741.84
  4. Step 4: Simplify right side
    19,302.84x = 368,999,354.17
  5. Step 5: Solve for x
    x = 368,999,354.17/19,302.84
  6. Step 6: Final answer
    x = 19,116.32

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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.