Home / 12,907.32-19,314.90-7,972.92

Finding the Fourth Proportional to 12,907.32, 19,314.90 and 7,972.92

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Solution

The fourth proportional to 12,907.32, 19,314.90 and 7,972.92 is: 11,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.32 : 19,314.90 = 7,972.92 : x
  2. Step 2: Convert to fraction form
    12,907.32/19,314.90 = 7,972.92/x
  3. Step 3: Cross multiply
    12,907.32x = 19,314.90 × 7,972.92
  4. Step 4: Simplify right side
    12,907.32x = 153,996,152.51
  5. Step 5: Solve for x
    x = 153,996,152.51/12,907.32
  6. Step 6: Final answer
    x = 11,930.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.