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Finding the Fourth Proportional to 19,274.49, 28,888.61 and 9,918.93

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Solution

The fourth proportional to 19,274.49, 28,888.61 and 9,918.93 is: 14,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,274.49 : 28,888.61 = 9,918.93 : x
  2. Step 2: Convert to fraction form
    19,274.49/28,888.61 = 9,918.93/x
  3. Step 3: Cross multiply
    19,274.49x = 28,888.61 × 9,918.93
  4. Step 4: Simplify right side
    19,274.49x = 286,543,942.46
  5. Step 5: Solve for x
    x = 286,543,942.46/19,274.49
  6. Step 6: Final answer
    x = 14,866.48

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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.