Home / 13,615.32-18,784.68-7,948.80

Finding the Fourth Proportional to 13,615.32, 18,784.68 and 7,948.80

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Solution

The fourth proportional to 13,615.32, 18,784.68 and 7,948.80 is: 10,966.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.32 : 18,784.68 = 7,948.80 : x
  2. Step 2: Convert to fraction form
    13,615.32/18,784.68 = 7,948.80/x
  3. Step 3: Cross multiply
    13,615.32x = 18,784.68 × 7,948.80
  4. Step 4: Simplify right side
    13,615.32x = 149,315,664.38
  5. Step 5: Solve for x
    x = 149,315,664.38/13,615.32
  6. Step 6: Final answer
    x = 10,966.74

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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.