Home / 28,428.97-39,239.01-19,369.32

Finding the Fourth Proportional to 28,428.97, 39,239.01 and 19,369.32

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Solution

The fourth proportional to 28,428.97, 39,239.01 and 19,369.32 is: 26,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.97 : 39,239.01 = 19,369.32 : x
  2. Step 2: Convert to fraction form
    28,428.97/39,239.01 = 19,369.32/x
  3. Step 3: Cross multiply
    28,428.97x = 39,239.01 × 19,369.32
  4. Step 4: Simplify right side
    28,428.97x = 760,032,941.17
  5. Step 5: Solve for x
    x = 760,032,941.17/28,428.97
  6. Step 6: Final answer
    x = 26,734.45

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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.