Home / 28,253.51-38,990.00-15,678.26

Finding the Fourth Proportional to 28,253.51, 38,990.00 and 15,678.26

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Solution

The fourth proportional to 28,253.51, 38,990.00 and 15,678.26 is: 21,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.51 : 38,990.00 = 15,678.26 : x
  2. Step 2: Convert to fraction form
    28,253.51/38,990.00 = 15,678.26/x
  3. Step 3: Cross multiply
    28,253.51x = 38,990.00 × 15,678.26
  4. Step 4: Simplify right side
    28,253.51x = 611,295,279.01
  5. Step 5: Solve for x
    x = 611,295,279.01/28,253.51
  6. Step 6: Final answer
    x = 21,636.08

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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.