Home / 19,859.23-27,390.56-13,490.73

Finding the Fourth Proportional to 19,859.23, 27,390.56 and 13,490.73

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Solution

The fourth proportional to 19,859.23, 27,390.56 and 13,490.73 is: 18,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,859.23 : 27,390.56 = 13,490.73 : x
  2. Step 2: Convert to fraction form
    19,859.23/27,390.56 = 13,490.73/x
  3. Step 3: Cross multiply
    19,859.23x = 27,390.56 × 13,490.73
  4. Step 4: Simplify right side
    19,859.23x = 369,518,649.51
  5. Step 5: Solve for x
    x = 369,518,649.51/19,859.23
  6. Step 6: Final answer
    x = 18,606.90

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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.