Home / 19,109.79-28,642.41-12,437.01

Finding the Fourth Proportional to 19,109.79, 28,642.41 and 12,437.01

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Solution

The fourth proportional to 19,109.79, 28,642.41 and 12,437.01 is: 18,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.79 : 28,642.41 = 12,437.01 : x
  2. Step 2: Convert to fraction form
    19,109.79/28,642.41 = 12,437.01/x
  3. Step 3: Cross multiply
    19,109.79x = 28,642.41 × 12,437.01
  4. Step 4: Simplify right side
    19,109.79x = 356,225,939.59
  5. Step 5: Solve for x
    x = 356,225,939.59/19,109.79
  6. Step 6: Final answer
    x = 18,641.02

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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.