Home / 13,864.77-19,133.10-7,815

Finding the Fourth Proportional to 13,864.77, 19,133.10 and 7,815

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Solution

The fourth proportional to 13,864.77, 19,133.10 and 7,815 is: 10,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.77 : 19,133.10 = 7,815 : x
  2. Step 2: Convert to fraction form
    13,864.77/19,133.10 = 7,815/x
  3. Step 3: Cross multiply
    13,864.77x = 19,133.10 × 7,815
  4. Step 4: Simplify right side
    13,864.77x = 149,525,176.50
  5. Step 5: Solve for x
    x = 149,525,176.50/13,864.77
  6. Step 6: Final answer
    x = 10,784.54

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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.