Home / 13,612.30-18,782.58-7,644.22

Finding the Fourth Proportional to 13,612.30, 18,782.58 and 7,644.22

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Solution

The fourth proportional to 13,612.30, 18,782.58 and 7,644.22 is: 10,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.30 : 18,782.58 = 7,644.22 : x
  2. Step 2: Convert to fraction form
    13,612.30/18,782.58 = 7,644.22/x
  3. Step 3: Cross multiply
    13,612.30x = 18,782.58 × 7,644.22
  4. Step 4: Simplify right side
    13,612.30x = 143,578,173.69
  5. Step 5: Solve for x
    x = 143,578,173.69/13,612.30
  6. Step 6: Final answer
    x = 10,547.68

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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.