Home / 28,090.54-38,763.93-15,515.02

Finding the Fourth Proportional to 28,090.54, 38,763.93 and 15,515.02

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Solution

The fourth proportional to 28,090.54, 38,763.93 and 15,515.02 is: 21,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.54 : 38,763.93 = 15,515.02 : x
  2. Step 2: Convert to fraction form
    28,090.54/38,763.93 = 15,515.02/x
  3. Step 3: Cross multiply
    28,090.54x = 38,763.93 × 15,515.02
  4. Step 4: Simplify right side
    28,090.54x = 601,423,149.23
  5. Step 5: Solve for x
    x = 601,423,149.23/28,090.54
  6. Step 6: Final answer
    x = 21,410.17

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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.