Home / 13,455.36-18,547.20-9,912.96

Finding the Fourth Proportional to 13,455.36, 18,547.20 and 9,912.96

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Solution

The fourth proportional to 13,455.36, 18,547.20 and 9,912.96 is: 13,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.36 : 18,547.20 = 9,912.96 : x
  2. Step 2: Convert to fraction form
    13,455.36/18,547.20 = 9,912.96/x
  3. Step 3: Cross multiply
    13,455.36x = 18,547.20 × 9,912.96
  4. Step 4: Simplify right side
    13,455.36x = 183,857,651.71
  5. Step 5: Solve for x
    x = 183,857,651.71/13,455.36
  6. Step 6: Final answer
    x = 13,664.27

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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.