Home / 19,186.61-26,470-12,013.55

Finding the Fourth Proportional to 19,186.61, 26,470 and 12,013.55

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Solution

The fourth proportional to 19,186.61, 26,470 and 12,013.55 is: 16,573.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,186.61 : 26,470 = 12,013.55 : x
  2. Step 2: Convert to fraction form
    19,186.61/26,470 = 12,013.55/x
  3. Step 3: Cross multiply
    19,186.61x = 26,470 × 12,013.55
  4. Step 4: Simplify right side
    19,186.61x = 317,998,668.50
  5. Step 5: Solve for x
    x = 317,998,668.50/19,186.61
  6. Step 6: Final answer
    x = 16,573.99

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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.