Home / 28,577.90-39,437.46-15,831.08

Finding the Fourth Proportional to 28,577.90, 39,437.46 and 15,831.08

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Solution

The fourth proportional to 28,577.90, 39,437.46 and 15,831.08 is: 21,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.90 : 39,437.46 = 15,831.08 : x
  2. Step 2: Convert to fraction form
    28,577.90/39,437.46 = 15,831.08/x
  3. Step 3: Cross multiply
    28,577.90x = 39,437.46 × 15,831.08
  4. Step 4: Simplify right side
    28,577.90x = 624,337,387.07
  5. Step 5: Solve for x
    x = 624,337,387.07/28,577.90
  6. Step 6: Final answer
    x = 21,846.86

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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.