Home / 19,142.90-26,411.10-11,586.81

Finding the Fourth Proportional to 19,142.90, 26,411.10 and 11,586.81

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Solution

The fourth proportional to 19,142.90, 26,411.10 and 11,586.81 is: 15,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.90 : 26,411.10 = 11,586.81 : x
  2. Step 2: Convert to fraction form
    19,142.90/26,411.10 = 11,586.81/x
  3. Step 3: Cross multiply
    19,142.90x = 26,411.10 × 11,586.81
  4. Step 4: Simplify right side
    19,142.90x = 306,020,397.59
  5. Step 5: Solve for x
    x = 306,020,397.59/19,142.90
  6. Step 6: Final answer
    x = 15,986.11

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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.