Home / 19,721.33-27,224.24-15,345.77

Finding the Fourth Proportional to 19,721.33, 27,224.24 and 15,345.77

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Solution

The fourth proportional to 19,721.33, 27,224.24 and 15,345.77 is: 21,184.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.33 : 27,224.24 = 15,345.77 : x
  2. Step 2: Convert to fraction form
    19,721.33/27,224.24 = 15,345.77/x
  3. Step 3: Cross multiply
    19,721.33x = 27,224.24 × 15,345.77
  4. Step 4: Simplify right side
    19,721.33x = 417,776,712.61
  5. Step 5: Solve for x
    x = 417,776,712.61/19,721.33
  6. Step 6: Final answer
    x = 21,184.00

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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.