Home / 13,881.51-19,164.87-10,890.18

Finding the Fourth Proportional to 13,881.51, 19,164.87 and 10,890.18

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Solution

The fourth proportional to 13,881.51, 19,164.87 and 10,890.18 is: 15,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.51 : 19,164.87 = 10,890.18 : x
  2. Step 2: Convert to fraction form
    13,881.51/19,164.87 = 10,890.18/x
  3. Step 3: Cross multiply
    13,881.51x = 19,164.87 × 10,890.18
  4. Step 4: Simplify right side
    13,881.51x = 208,708,883.98
  5. Step 5: Solve for x
    x = 208,708,883.98/13,881.51
  6. Step 6: Final answer
    x = 15,035.03

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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.