Home / 19,775.86-27,298.56-12,972.47

Finding the Fourth Proportional to 19,775.86, 27,298.56 and 12,972.47

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Solution

The fourth proportional to 19,775.86, 27,298.56 and 12,972.47 is: 17,907.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.86 : 27,298.56 = 12,972.47 : x
  2. Step 2: Convert to fraction form
    19,775.86/27,298.56 = 12,972.47/x
  3. Step 3: Cross multiply
    19,775.86x = 27,298.56 × 12,972.47
  4. Step 4: Simplify right side
    19,775.86x = 354,129,750.64
  5. Step 5: Solve for x
    x = 354,129,750.64/19,775.86
  6. Step 6: Final answer
    x = 17,907.17

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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.