Home / 19,068.91-28,611.23-8,389.78

Finding the Fourth Proportional to 19,068.91, 28,611.23 and 8,389.78

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Solution

The fourth proportional to 19,068.91, 28,611.23 and 8,389.78 is: 12,588.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,068.91 : 28,611.23 = 8,389.78 : x
  2. Step 2: Convert to fraction form
    19,068.91/28,611.23 = 8,389.78/x
  3. Step 3: Cross multiply
    19,068.91x = 28,611.23 × 8,389.78
  4. Step 4: Simplify right side
    19,068.91x = 240,041,883.28
  5. Step 5: Solve for x
    x = 240,041,883.28/19,068.91
  6. Step 6: Final answer
    x = 12,588.13

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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.