Home / 13,585.51-18,748-7,617.18

Finding the Fourth Proportional to 13,585.51, 18,748 and 7,617.18

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Solution

The fourth proportional to 13,585.51, 18,748 and 7,617.18 is: 10,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.51 : 18,748 = 7,617.18 : x
  2. Step 2: Convert to fraction form
    13,585.51/18,748 = 7,617.18/x
  3. Step 3: Cross multiply
    13,585.51x = 18,748 × 7,617.18
  4. Step 4: Simplify right side
    13,585.51x = 142,806,890.64
  5. Step 5: Solve for x
    x = 142,806,890.64/13,585.51
  6. Step 6: Final answer
    x = 10,511.71

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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.