Home / 12,907.60-17,812.37-7,242.23

Finding the Fourth Proportional to 12,907.60, 17,812.37 and 7,242.23

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Solution

The fourth proportional to 12,907.60, 17,812.37 and 7,242.23 is: 9,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.60 : 17,812.37 = 7,242.23 : x
  2. Step 2: Convert to fraction form
    12,907.60/17,812.37 = 7,242.23/x
  3. Step 3: Cross multiply
    12,907.60x = 17,812.37 × 7,242.23
  4. Step 4: Simplify right side
    12,907.60x = 129,001,280.39
  5. Step 5: Solve for x
    x = 129,001,280.39/12,907.60
  6. Step 6: Final answer
    x = 9,994.21

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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.