Home / 28,254.40-38,989.74-15,507.24

Finding the Fourth Proportional to 28,254.40, 38,989.74 and 15,507.24

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Solution

The fourth proportional to 28,254.40, 38,989.74 and 15,507.24 is: 21,399.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.40 : 38,989.74 = 15,507.24 : x
  2. Step 2: Convert to fraction form
    28,254.40/38,989.74 = 15,507.24/x
  3. Step 3: Cross multiply
    28,254.40x = 38,989.74 × 15,507.24
  4. Step 4: Simplify right side
    28,254.40x = 604,623,255.72
  5. Step 5: Solve for x
    x = 604,623,255.72/28,254.40
  6. Step 6: Final answer
    x = 21,399.26

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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.