Home / 19,351.34-26,688.99-12,978.98

Finding the Fourth Proportional to 19,351.34, 26,688.99 and 12,978.98

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Solution

The fourth proportional to 19,351.34, 26,688.99 and 12,978.98 is: 17,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,351.34 : 26,688.99 = 12,978.98 : x
  2. Step 2: Convert to fraction form
    19,351.34/26,688.99 = 12,978.98/x
  3. Step 3: Cross multiply
    19,351.34x = 26,688.99 × 12,978.98
  4. Step 4: Simplify right side
    19,351.34x = 346,395,867.43
  5. Step 5: Solve for x
    x = 346,395,867.43/19,351.34
  6. Step 6: Final answer
    x = 17,900.36

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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.