Home / 13,864.21-19,139.67-8,562.11

Finding the Fourth Proportional to 13,864.21, 19,139.67 and 8,562.11

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Solution

The fourth proportional to 13,864.21, 19,139.67 and 8,562.11 is: 11,820.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.21 : 19,139.67 = 8,562.11 : x
  2. Step 2: Convert to fraction form
    13,864.21/19,139.67 = 8,562.11/x
  3. Step 3: Cross multiply
    13,864.21x = 19,139.67 × 8,562.11
  4. Step 4: Simplify right side
    13,864.21x = 163,875,840.12
  5. Step 5: Solve for x
    x = 163,875,840.12/13,864.21
  6. Step 6: Final answer
    x = 11,820.06

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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.