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Finding the Fourth Proportional to 19,557, 26,988.66 and 10,725

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Solution

The fourth proportional to 19,557, 26,988.66 and 10,725 is: 14,800.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,557 : 26,988.66 = 10,725 : x
  2. Step 2: Convert to fraction form
    19,557/26,988.66 = 10,725/x
  3. Step 3: Cross multiply
    19,557x = 26,988.66 × 10,725
  4. Step 4: Simplify right side
    19,557x = 289,453,378.50
  5. Step 5: Solve for x
    x = 289,453,378.50/19,557
  6. Step 6: Final answer
    x = 14,800.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.