Home / 13,653.31-18,841.55-7,685.02

Finding the Fourth Proportional to 13,653.31, 18,841.55 and 7,685.02

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Solution

The fourth proportional to 13,653.31, 18,841.55 and 7,685.02 is: 10,605.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.31 : 18,841.55 = 7,685.02 : x
  2. Step 2: Convert to fraction form
    13,653.31/18,841.55 = 7,685.02/x
  3. Step 3: Cross multiply
    13,653.31x = 18,841.55 × 7,685.02
  4. Step 4: Simplify right side
    13,653.31x = 144,797,688.58
  5. Step 5: Solve for x
    x = 144,797,688.58/13,653.31
  6. Step 6: Final answer
    x = 10,605.32

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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.