Home / 13,781.84-19,018.80-7,494.08

Finding the Fourth Proportional to 13,781.84, 19,018.80 and 7,494.08

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Solution

The fourth proportional to 13,781.84, 19,018.80 and 7,494.08 is: 10,341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.84 : 19,018.80 = 7,494.08 : x
  2. Step 2: Convert to fraction form
    13,781.84/19,018.80 = 7,494.08/x
  3. Step 3: Cross multiply
    13,781.84x = 19,018.80 × 7,494.08
  4. Step 4: Simplify right side
    13,781.84x = 142,528,408.70
  5. Step 5: Solve for x
    x = 142,528,408.70/13,781.84
  6. Step 6: Final answer
    x = 10,341.75

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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.