Home / 12,897.90-19,329.84-9,970.56

Finding the Fourth Proportional to 12,897.90, 19,329.84 and 9,970.56

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Solution

The fourth proportional to 12,897.90, 19,329.84 and 9,970.56 is: 14,942.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.90 : 19,329.84 = 9,970.56 : x
  2. Step 2: Convert to fraction form
    12,897.90/19,329.84 = 9,970.56/x
  3. Step 3: Cross multiply
    12,897.90x = 19,329.84 × 9,970.56
  4. Step 4: Simplify right side
    12,897.90x = 192,729,329.51
  5. Step 5: Solve for x
    x = 192,729,329.51/12,897.90
  6. Step 6: Final answer
    x = 14,942.69

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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.