Home / 13,869.64-19,135.43-7,897.08

Finding the Fourth Proportional to 13,869.64, 19,135.43 and 7,897.08

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Solution

The fourth proportional to 13,869.64, 19,135.43 and 7,897.08 is: 10,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.64 : 19,135.43 = 7,897.08 : x
  2. Step 2: Convert to fraction form
    13,869.64/19,135.43 = 7,897.08/x
  3. Step 3: Cross multiply
    13,869.64x = 19,135.43 × 7,897.08
  4. Step 4: Simplify right side
    13,869.64x = 151,113,982.06
  5. Step 5: Solve for x
    x = 151,113,982.06/13,869.64
  6. Step 6: Final answer
    x = 10,895.31

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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.