Home / 19,870.13-27,424.43-11,486.63

Finding the Fourth Proportional to 19,870.13, 27,424.43 and 11,486.63

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Solution

The fourth proportional to 19,870.13, 27,424.43 and 11,486.63 is: 15,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.13 : 27,424.43 = 11,486.63 : x
  2. Step 2: Convert to fraction form
    19,870.13/27,424.43 = 11,486.63/x
  3. Step 3: Cross multiply
    19,870.13x = 27,424.43 × 11,486.63
  4. Step 4: Simplify right side
    19,870.13x = 315,014,085.82
  5. Step 5: Solve for x
    x = 315,014,085.82/19,870.13
  6. Step 6: Final answer
    x = 15,853.65

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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.