Home / 25,720.76-38,585.75-9,090.45

Finding the Fourth Proportional to 25,720.76, 38,585.75 and 9,090.45

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Solution

The fourth proportional to 25,720.76, 38,585.75 and 9,090.45 is: 13,637.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.76 : 38,585.75 = 9,090.45 : x
  2. Step 2: Convert to fraction form
    25,720.76/38,585.75 = 9,090.45/x
  3. Step 3: Cross multiply
    25,720.76x = 38,585.75 × 9,090.45
  4. Step 4: Simplify right side
    25,720.76x = 350,761,785.64
  5. Step 5: Solve for x
    x = 350,761,785.64/25,720.76
  6. Step 6: Final answer
    x = 13,637.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.