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Finding the Fourth Proportional to 15,348.10, 21,516.50 and 15,348.10

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Solution

The fourth proportional to 15,348.10, 21,516.50 and 15,348.10 is: 21,516.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.10 : 21,516.50 = 15,348.10 : x
  2. Step 2: Convert to fraction form
    15,348.10/21,516.50 = 15,348.10/x
  3. Step 3: Cross multiply
    15,348.10x = 21,516.50 × 15,348.10
  4. Step 4: Simplify right side
    15,348.10x = 330,237,393.65
  5. Step 5: Solve for x
    x = 330,237,393.65/15,348.10
  6. Step 6: Final answer
    x = 21,516.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.