Home / 13,033.12-17,988.32-7,730.88

Finding the Fourth Proportional to 13,033.12, 17,988.32 and 7,730.88

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Solution

The fourth proportional to 13,033.12, 17,988.32 and 7,730.88 is: 10,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,033.12 : 17,988.32 = 7,730.88 : x
  2. Step 2: Convert to fraction form
    13,033.12/17,988.32 = 7,730.88/x
  3. Step 3: Cross multiply
    13,033.12x = 17,988.32 × 7,730.88
  4. Step 4: Simplify right side
    13,033.12x = 139,065,543.32
  5. Step 5: Solve for x
    x = 139,065,543.32/13,033.12
  6. Step 6: Final answer
    x = 10,670.17

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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.