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Finding the Fourth Proportional to 15,254.10, 21,384.90 and 15,254.10

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Solution

The fourth proportional to 15,254.10, 21,384.90 and 15,254.10 is: 21,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.10 : 21,384.90 = 15,254.10 : x
  2. Step 2: Convert to fraction form
    15,254.10/21,384.90 = 15,254.10/x
  3. Step 3: Cross multiply
    15,254.10x = 21,384.90 × 15,254.10
  4. Step 4: Simplify right side
    15,254.10x = 326,207,403.09
  5. Step 5: Solve for x
    x = 326,207,403.09/15,254.10
  6. Step 6: Final answer
    x = 21,384.90

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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.