Home / 19,869.16-27,418.08-11,907.40

Finding the Fourth Proportional to 19,869.16, 27,418.08 and 11,907.40

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Solution

The fourth proportional to 19,869.16, 27,418.08 and 11,907.40 is: 16,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.16 : 27,418.08 = 11,907.40 : x
  2. Step 2: Convert to fraction form
    19,869.16/27,418.08 = 11,907.40/x
  3. Step 3: Cross multiply
    19,869.16x = 27,418.08 × 11,907.40
  4. Step 4: Simplify right side
    19,869.16x = 326,478,045.79
  5. Step 5: Solve for x
    x = 326,478,045.79/19,869.16
  6. Step 6: Final answer
    x = 16,431.40

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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.