Home / 28,507.50-39,339.63-15,932.34

Finding the Fourth Proportional to 28,507.50, 39,339.63 and 15,932.34

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Solution

The fourth proportional to 28,507.50, 39,339.63 and 15,932.34 is: 21,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.50 : 39,339.63 = 15,932.34 : x
  2. Step 2: Convert to fraction form
    28,507.50/39,339.63 = 15,932.34/x
  3. Step 3: Cross multiply
    28,507.50x = 39,339.63 × 15,932.34
  4. Step 4: Simplify right side
    28,507.50x = 626,772,360.63
  5. Step 5: Solve for x
    x = 626,772,360.63/28,507.50
  6. Step 6: Final answer
    x = 21,986.23

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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.