Home / 13,088.90-18,062.60-7,120.60

Finding the Fourth Proportional to 13,088.90, 18,062.60 and 7,120.60

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Solution

The fourth proportional to 13,088.90, 18,062.60 and 7,120.60 is: 9,826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.90 : 18,062.60 = 7,120.60 : x
  2. Step 2: Convert to fraction form
    13,088.90/18,062.60 = 7,120.60/x
  3. Step 3: Cross multiply
    13,088.90x = 18,062.60 × 7,120.60
  4. Step 4: Simplify right side
    13,088.90x = 128,616,474.99
  5. Step 5: Solve for x
    x = 128,616,474.99/13,088.90
  6. Step 6: Final answer
    x = 9,826.37

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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.