Home / 13,054.10-18,014.70-7,085.78

Finding the Fourth Proportional to 13,054.10, 18,014.70 and 7,085.78

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Solution

The fourth proportional to 13,054.10, 18,014.70 and 7,085.78 is: 9,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,054.10 : 18,014.70 = 7,085.78 : x
  2. Step 2: Convert to fraction form
    13,054.10/18,014.70 = 7,085.78/x
  3. Step 3: Cross multiply
    13,054.10x = 18,014.70 × 7,085.78
  4. Step 4: Simplify right side
    13,054.10x = 127,648,200.97
  5. Step 5: Solve for x
    x = 127,648,200.97/13,054.10
  6. Step 6: Final answer
    x = 9,778.40

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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.