Home / 13,721.41-18,935.30-7,752.95

Finding the Fourth Proportional to 13,721.41, 18,935.30 and 7,752.95

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Solution

The fourth proportional to 13,721.41, 18,935.30 and 7,752.95 is: 10,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.41 : 18,935.30 = 7,752.95 : x
  2. Step 2: Convert to fraction form
    13,721.41/18,935.30 = 7,752.95/x
  3. Step 3: Cross multiply
    13,721.41x = 18,935.30 × 7,752.95
  4. Step 4: Simplify right side
    13,721.41x = 146,804,402.38
  5. Step 5: Solve for x
    x = 146,804,402.38/13,721.41
  6. Step 6: Final answer
    x = 10,698.93

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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.