Home / 28,458.53-39,272.75-15,883.28

Finding the Fourth Proportional to 28,458.53, 39,272.75 and 15,883.28

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Solution

The fourth proportional to 28,458.53, 39,272.75 and 15,883.28 is: 21,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.53 : 39,272.75 = 15,883.28 : x
  2. Step 2: Convert to fraction form
    28,458.53/39,272.75 = 15,883.28/x
  3. Step 3: Cross multiply
    28,458.53x = 39,272.75 × 15,883.28
  4. Step 4: Simplify right side
    28,458.53x = 623,779,888.26
  5. Step 5: Solve for x
    x = 623,779,888.26/28,458.53
  6. Step 6: Final answer
    x = 21,918.91

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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.