Home / 13,663.46-18,852.23-9,117.20

Finding the Fourth Proportional to 13,663.46, 18,852.23 and 9,117.20

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Solution

The fourth proportional to 13,663.46, 18,852.23 and 9,117.20 is: 12,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.46 : 18,852.23 = 9,117.20 : x
  2. Step 2: Convert to fraction form
    13,663.46/18,852.23 = 9,117.20/x
  3. Step 3: Cross multiply
    13,663.46x = 18,852.23 × 9,117.20
  4. Step 4: Simplify right side
    13,663.46x = 171,879,621.28
  5. Step 5: Solve for x
    x = 171,879,621.28/13,663.46
  6. Step 6: Final answer
    x = 12,579.51

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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.