Home / 19,618.81-29,389.84-15,678.36

Finding the Fourth Proportional to 19,618.81, 29,389.84 and 15,678.36

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Solution

The fourth proportional to 19,618.81, 29,389.84 and 15,678.36 is: 23,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.81 : 29,389.84 = 15,678.36 : x
  2. Step 2: Convert to fraction form
    19,618.81/29,389.84 = 15,678.36/x
  3. Step 3: Cross multiply
    19,618.81x = 29,389.84 × 15,678.36
  4. Step 4: Simplify right side
    19,618.81x = 460,784,452.67
  5. Step 5: Solve for x
    x = 460,784,452.67/19,618.81
  6. Step 6: Final answer
    x = 23,486.87

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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.