Home / 19,880.03-27,423.01-11,917.63

Finding the Fourth Proportional to 19,880.03, 27,423.01 and 11,917.63

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Solution

The fourth proportional to 19,880.03, 27,423.01 and 11,917.63 is: 16,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.03 : 27,423.01 = 11,917.63 : x
  2. Step 2: Convert to fraction form
    19,880.03/27,423.01 = 11,917.63/x
  3. Step 3: Cross multiply
    19,880.03x = 27,423.01 × 11,917.63
  4. Step 4: Simplify right side
    19,880.03x = 326,817,268.81
  5. Step 5: Solve for x
    x = 326,817,268.81/19,880.03
  6. Step 6: Final answer
    x = 16,439.47

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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.