Home / 13,643.90-18,828.38-7,675.57

Finding the Fourth Proportional to 13,643.90, 18,828.38 and 7,675.57

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Solution

The fourth proportional to 13,643.90, 18,828.38 and 7,675.57 is: 10,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.90 : 18,828.38 = 7,675.57 : x
  2. Step 2: Convert to fraction form
    13,643.90/18,828.38 = 7,675.57/x
  3. Step 3: Cross multiply
    13,643.90x = 18,828.38 × 7,675.57
  4. Step 4: Simplify right side
    13,643.90x = 144,518,548.68
  5. Step 5: Solve for x
    x = 144,518,548.68/13,643.90
  6. Step 6: Final answer
    x = 10,592.17

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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.