Home / 13,740.76-18,977.70-9,256.66

Finding the Fourth Proportional to 13,740.76, 18,977.70 and 9,256.66

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Solution

The fourth proportional to 13,740.76, 18,977.70 and 9,256.66 is: 12,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.76 : 18,977.70 = 9,256.66 : x
  2. Step 2: Convert to fraction form
    13,740.76/18,977.70 = 9,256.66/x
  3. Step 3: Cross multiply
    13,740.76x = 18,977.70 × 9,256.66
  4. Step 4: Simplify right side
    13,740.76x = 175,670,116.48
  5. Step 5: Solve for x
    x = 175,670,116.48/13,740.76
  6. Step 6: Final answer
    x = 12,784.60

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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.