Home / 19,430.07-26,812.91-11,777.87

Finding the Fourth Proportional to 19,430.07, 26,812.91 and 11,777.87

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Solution

The fourth proportional to 19,430.07, 26,812.91 and 11,777.87 is: 16,253.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.07 : 26,812.91 = 11,777.87 : x
  2. Step 2: Convert to fraction form
    19,430.07/26,812.91 = 11,777.87/x
  3. Step 3: Cross multiply
    19,430.07x = 26,812.91 × 11,777.87
  4. Step 4: Simplify right side
    19,430.07x = 315,798,968.30
  5. Step 5: Solve for x
    x = 315,798,968.30/19,430.07
  6. Step 6: Final answer
    x = 16,253.11

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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.