Home / 13,307.16-18,364.72-7,643.70

Finding the Fourth Proportional to 13,307.16, 18,364.72 and 7,643.70

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Solution

The fourth proportional to 13,307.16, 18,364.72 and 7,643.70 is: 10,548.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.16 : 18,364.72 = 7,643.70 : x
  2. Step 2: Convert to fraction form
    13,307.16/18,364.72 = 7,643.70/x
  3. Step 3: Cross multiply
    13,307.16x = 18,364.72 × 7,643.70
  4. Step 4: Simplify right side
    13,307.16x = 140,374,410.26
  5. Step 5: Solve for x
    x = 140,374,410.26/13,307.16
  6. Step 6: Final answer
    x = 10,548.79

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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.