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Finding the Fourth Proportional to 13,036.80, 17,988 and 7,733.32

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Solution

The fourth proportional to 13,036.80, 17,988 and 7,733.32 is: 10,670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,036.80 : 17,988 = 7,733.32 : x
  2. Step 2: Convert to fraction form
    13,036.80/17,988 = 7,733.32/x
  3. Step 3: Cross multiply
    13,036.80x = 17,988 × 7,733.32
  4. Step 4: Simplify right side
    13,036.80x = 139,106,960.16
  5. Step 5: Solve for x
    x = 139,106,960.16/13,036.80
  6. Step 6: Final answer
    x = 10,670.33

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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.