Home / 15,078.30-20,788.93-10,776.53

Finding the Fourth Proportional to 15,078.30, 20,788.93 and 10,776.53

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Solution

The fourth proportional to 15,078.30, 20,788.93 and 10,776.53 is: 14,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078.30 : 20,788.93 = 10,776.53 : x
  2. Step 2: Convert to fraction form
    15,078.30/20,788.93 = 10,776.53/x
  3. Step 3: Cross multiply
    15,078.30x = 20,788.93 × 10,776.53
  4. Step 4: Simplify right side
    15,078.30x = 224,032,527.81
  5. Step 5: Solve for x
    x = 224,032,527.81/15,078.30
  6. Step 6: Final answer
    x = 14,857.94

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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.