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Finding the Fourth Proportional to 13,070.16, 18,029.52 and 8,030.88

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Solution

The fourth proportional to 13,070.16, 18,029.52 and 8,030.88 is: 11,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.16 : 18,029.52 = 8,030.88 : x
  2. Step 2: Convert to fraction form
    13,070.16/18,029.52 = 8,030.88/x
  3. Step 3: Cross multiply
    13,070.16x = 18,029.52 × 8,030.88
  4. Step 4: Simplify right side
    13,070.16x = 144,792,911.58
  5. Step 5: Solve for x
    x = 144,792,911.58/13,070.16
  6. Step 6: Final answer
    x = 11,078.13

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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.