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Finding the Fourth Proportional to 14,218.70, 21,328.05 and 13,246.70

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Solution

The fourth proportional to 14,218.70, 21,328.05 and 13,246.70 is: 19,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.70 : 21,328.05 = 13,246.70 : x
  2. Step 2: Convert to fraction form
    14,218.70/21,328.05 = 13,246.70/x
  3. Step 3: Cross multiply
    14,218.70x = 21,328.05 × 13,246.70
  4. Step 4: Simplify right side
    14,218.70x = 282,526,279.94
  5. Step 5: Solve for x
    x = 282,526,279.94/14,218.70
  6. Step 6: Final answer
    x = 19,870.05

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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.