Home / 12,783.54-17,637.57-7,405.62

Finding the Fourth Proportional to 12,783.54, 17,637.57 and 7,405.62

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Solution

The fourth proportional to 12,783.54, 17,637.57 and 7,405.62 is: 10,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,783.54 : 17,637.57 = 7,405.62 : x
  2. Step 2: Convert to fraction form
    12,783.54/17,637.57 = 7,405.62/x
  3. Step 3: Cross multiply
    12,783.54x = 17,637.57 × 7,405.62
  4. Step 4: Simplify right side
    12,783.54x = 130,617,141.14
  5. Step 5: Solve for x
    x = 130,617,141.14/12,783.54
  6. Step 6: Final answer
    x = 10,217.60

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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.