Home / 13,152.48-18,128.74-9,325.36

Finding the Fourth Proportional to 13,152.48, 18,128.74 and 9,325.36

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Solution

The fourth proportional to 13,152.48, 18,128.74 and 9,325.36 is: 12,853.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.48 : 18,128.74 = 9,325.36 : x
  2. Step 2: Convert to fraction form
    13,152.48/18,128.74 = 9,325.36/x
  3. Step 3: Cross multiply
    13,152.48x = 18,128.74 × 9,325.36
  4. Step 4: Simplify right side
    13,152.48x = 169,057,026.85
  5. Step 5: Solve for x
    x = 169,057,026.85/13,152.48
  6. Step 6: Final answer
    x = 12,853.62

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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.