Home / 13,416.84-18,513.64-7,447.08

Finding the Fourth Proportional to 13,416.84, 18,513.64 and 7,447.08

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Solution

The fourth proportional to 13,416.84, 18,513.64 and 7,447.08 is: 10,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.84 : 18,513.64 = 7,447.08 : x
  2. Step 2: Convert to fraction form
    13,416.84/18,513.64 = 7,447.08/x
  3. Step 3: Cross multiply
    13,416.84x = 18,513.64 × 7,447.08
  4. Step 4: Simplify right side
    13,416.84x = 137,872,558.17
  5. Step 5: Solve for x
    x = 137,872,558.17/13,416.84
  6. Step 6: Final answer
    x = 10,276.08

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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.