Home / 19,639.18-27,102.12-10,686.68

Finding the Fourth Proportional to 19,639.18, 27,102.12 and 10,686.68

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Solution

The fourth proportional to 19,639.18, 27,102.12 and 10,686.68 is: 14,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.18 : 27,102.12 = 10,686.68 : x
  2. Step 2: Convert to fraction form
    19,639.18/27,102.12 = 10,686.68/x
  3. Step 3: Cross multiply
    19,639.18x = 27,102.12 × 10,686.68
  4. Step 4: Simplify right side
    19,639.18x = 289,631,683.76
  5. Step 5: Solve for x
    x = 289,631,683.76/19,639.18
  6. Step 6: Final answer
    x = 14,747.65

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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.