Home / 13,656.04-18,838.64-9,186.32

Finding the Fourth Proportional to 13,656.04, 18,838.64 and 9,186.32

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Solution

The fourth proportional to 13,656.04, 18,838.64 and 9,186.32 is: 12,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.04 : 18,838.64 = 9,186.32 : x
  2. Step 2: Convert to fraction form
    13,656.04/18,838.64 = 9,186.32/x
  3. Step 3: Cross multiply
    13,656.04x = 18,838.64 × 9,186.32
  4. Step 4: Simplify right side
    13,656.04x = 173,057,775.40
  5. Step 5: Solve for x
    x = 173,057,775.40/13,656.04
  6. Step 6: Final answer
    x = 12,672.62

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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.