Home / 18,681.56-25,780.64-10,298.08

Finding the Fourth Proportional to 18,681.56, 25,780.64 and 10,298.08

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Solution

The fourth proportional to 18,681.56, 25,780.64 and 10,298.08 is: 14,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.56 : 25,780.64 = 10,298.08 : x
  2. Step 2: Convert to fraction form
    18,681.56/25,780.64 = 10,298.08/x
  3. Step 3: Cross multiply
    18,681.56x = 25,780.64 × 10,298.08
  4. Step 4: Simplify right side
    18,681.56x = 265,491,093.17
  5. Step 5: Solve for x
    x = 265,491,093.17/18,681.56
  6. Step 6: Final answer
    x = 14,211.40

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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.