Home / 28,580.18-39,437.08-15,831.59

Finding the Fourth Proportional to 28,580.18, 39,437.08 and 15,831.59

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Solution

The fourth proportional to 28,580.18, 39,437.08 and 15,831.59 is: 21,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.18 : 39,437.08 = 15,831.59 : x
  2. Step 2: Convert to fraction form
    28,580.18/39,437.08 = 15,831.59/x
  3. Step 3: Cross multiply
    28,580.18x = 39,437.08 × 15,831.59
  4. Step 4: Simplify right side
    28,580.18x = 624,351,444.59
  5. Step 5: Solve for x
    x = 624,351,444.59/28,580.18
  6. Step 6: Final answer
    x = 21,845.61

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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.