Home / 31,748.07-43,812-18,319.17

Finding the Fourth Proportional to 31,748.07, 43,812 and 18,319.17

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Solution

The fourth proportional to 31,748.07, 43,812 and 18,319.17 is: 25,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,748.07 : 43,812 = 18,319.17 : x
  2. Step 2: Convert to fraction form
    31,748.07/43,812 = 18,319.17/x
  3. Step 3: Cross multiply
    31,748.07x = 43,812 × 18,319.17
  4. Step 4: Simplify right side
    31,748.07x = 802,599,476.04
  5. Step 5: Solve for x
    x = 802,599,476.04/31,748.07
  6. Step 6: Final answer
    x = 25,280.26

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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.