Home / 20,228.61-27,918.86-14,938.71

Finding the Fourth Proportional to 20,228.61, 27,918.86 and 14,938.71

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Solution

The fourth proportional to 20,228.61, 27,918.86 and 14,938.71 is: 20,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.61 : 27,918.86 = 14,938.71 : x
  2. Step 2: Convert to fraction form
    20,228.61/27,918.86 = 14,938.71/x
  3. Step 3: Cross multiply
    20,228.61x = 27,918.86 × 14,938.71
  4. Step 4: Simplify right side
    20,228.61x = 417,071,678.38
  5. Step 5: Solve for x
    x = 417,071,678.38/20,228.61
  6. Step 6: Final answer
    x = 20,617.91

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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.