Home / 28,111.48-38,796.26-15,538.64

Finding the Fourth Proportional to 28,111.48, 38,796.26 and 15,538.64

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Solution

The fourth proportional to 28,111.48, 38,796.26 and 15,538.64 is: 21,444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.48 : 38,796.26 = 15,538.64 : x
  2. Step 2: Convert to fraction form
    28,111.48/38,796.26 = 15,538.64/x
  3. Step 3: Cross multiply
    28,111.48x = 38,796.26 × 15,538.64
  4. Step 4: Simplify right side
    28,111.48x = 602,841,117.49
  5. Step 5: Solve for x
    x = 602,841,117.49/28,111.48
  6. Step 6: Final answer
    x = 21,444.66

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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.