Home / 13,476.78-18,594.97-7,812.45

Finding the Fourth Proportional to 13,476.78, 18,594.97 and 7,812.45

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Solution

The fourth proportional to 13,476.78, 18,594.97 and 7,812.45 is: 10,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.78 : 18,594.97 = 7,812.45 : x
  2. Step 2: Convert to fraction form
    13,476.78/18,594.97 = 7,812.45/x
  3. Step 3: Cross multiply
    13,476.78x = 18,594.97 × 7,812.45
  4. Step 4: Simplify right side
    13,476.78x = 145,272,253.85
  5. Step 5: Solve for x
    x = 145,272,253.85/13,476.78
  6. Step 6: Final answer
    x = 10,779.45

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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.