Home / 13,750.41-18,970.43-8,085.45

Finding the Fourth Proportional to 13,750.41, 18,970.43 and 8,085.45

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Solution

The fourth proportional to 13,750.41, 18,970.43 and 8,085.45 is: 11,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.41 : 18,970.43 = 8,085.45 : x
  2. Step 2: Convert to fraction form
    13,750.41/18,970.43 = 8,085.45/x
  3. Step 3: Cross multiply
    13,750.41x = 18,970.43 × 8,085.45
  4. Step 4: Simplify right side
    13,750.41x = 153,384,422.82
  5. Step 5: Solve for x
    x = 153,384,422.82/13,750.41
  6. Step 6: Final answer
    x = 11,154.90

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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.