Home / 18,319.14-25,280.40-9,935.64

Finding the Fourth Proportional to 18,319.14, 25,280.40 and 9,935.64

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Solution

The fourth proportional to 18,319.14, 25,280.40 and 9,935.64 is: 13,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.14 : 25,280.40 = 9,935.64 : x
  2. Step 2: Convert to fraction form
    18,319.14/25,280.40 = 9,935.64/x
  3. Step 3: Cross multiply
    18,319.14x = 25,280.40 × 9,935.64
  4. Step 4: Simplify right side
    18,319.14x = 251,176,953.46
  5. Step 5: Solve for x
    x = 251,176,953.46/18,319.14
  6. Step 6: Final answer
    x = 13,711.18

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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.