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Finding the Fourth Proportional to 19,562.60, 26,990.70 and 12,758.60

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Solution

The fourth proportional to 19,562.60, 26,990.70 and 12,758.60 is: 17,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,562.60 : 26,990.70 = 12,758.60 : x
  2. Step 2: Convert to fraction form
    19,562.60/26,990.70 = 12,758.60/x
  3. Step 3: Cross multiply
    19,562.60x = 26,990.70 × 12,758.60
  4. Step 4: Simplify right side
    19,562.60x = 344,363,545.02
  5. Step 5: Solve for x
    x = 344,363,545.02/19,562.60
  6. Step 6: Final answer
    x = 17,603.16

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1.5x scale

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.