Home / 13,153.24-18,155.10-7,851.64

Finding the Fourth Proportional to 13,153.24, 18,155.10 and 7,851.64

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Solution

The fourth proportional to 13,153.24, 18,155.10 and 7,851.64 is: 10,837.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.24 : 18,155.10 = 7,851.64 : x
  2. Step 2: Convert to fraction form
    13,153.24/18,155.10 = 7,851.64/x
  3. Step 3: Cross multiply
    13,153.24x = 18,155.10 × 7,851.64
  4. Step 4: Simplify right side
    13,153.24x = 142,547,309.36
  5. Step 5: Solve for x
    x = 142,547,309.36/13,153.24
  6. Step 6: Final answer
    x = 10,837.43

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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.