Home / 13,376.95-18,460.25-7,408.49

Finding the Fourth Proportional to 13,376.95, 18,460.25 and 7,408.49

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Solution

The fourth proportional to 13,376.95, 18,460.25 and 7,408.49 is: 10,223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.95 : 18,460.25 = 7,408.49 : x
  2. Step 2: Convert to fraction form
    13,376.95/18,460.25 = 7,408.49/x
  3. Step 3: Cross multiply
    13,376.95x = 18,460.25 × 7,408.49
  4. Step 4: Simplify right side
    13,376.95x = 136,762,577.52
  5. Step 5: Solve for x
    x = 136,762,577.52/13,376.95
  6. Step 6: Final answer
    x = 10,223.75

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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.