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Finding the Fourth Proportional to 14,583.70, 21,875.55 and 12,855.70

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Solution

The fourth proportional to 14,583.70, 21,875.55 and 12,855.70 is: 19,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,583.70 : 21,875.55 = 12,855.70 : x
  2. Step 2: Convert to fraction form
    14,583.70/21,875.55 = 12,855.70/x
  3. Step 3: Cross multiply
    14,583.70x = 21,875.55 × 12,855.70
  4. Step 4: Simplify right side
    14,583.70x = 281,225,508.14
  5. Step 5: Solve for x
    x = 281,225,508.14/14,583.70
  6. Step 6: Final answer
    x = 19,283.55

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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.