Home / 13,920.51-19,207.40-8,881.53

Finding the Fourth Proportional to 13,920.51, 19,207.40 and 8,881.53

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Solution

The fourth proportional to 13,920.51, 19,207.40 and 8,881.53 is: 12,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.51 : 19,207.40 = 8,881.53 : x
  2. Step 2: Convert to fraction form
    13,920.51/19,207.40 = 8,881.53/x
  3. Step 3: Cross multiply
    13,920.51x = 19,207.40 × 8,881.53
  4. Step 4: Simplify right side
    13,920.51x = 170,591,099.32
  5. Step 5: Solve for x
    x = 170,591,099.32/13,920.51
  6. Step 6: Final answer
    x = 12,254.66

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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.