Home / 19,135.79-26,411.68-10,640.90

Finding the Fourth Proportional to 19,135.79, 26,411.68 and 10,640.90

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Solution

The fourth proportional to 19,135.79, 26,411.68 and 10,640.90 is: 14,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.79 : 26,411.68 = 10,640.90 : x
  2. Step 2: Convert to fraction form
    19,135.79/26,411.68 = 10,640.90/x
  3. Step 3: Cross multiply
    19,135.79x = 26,411.68 × 10,640.90
  4. Step 4: Simplify right side
    19,135.79x = 281,044,045.71
  5. Step 5: Solve for x
    x = 281,044,045.71/19,135.79
  6. Step 6: Final answer
    x = 14,686.83

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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.