Home / 28,578.02-39,437.24-15,831.16

Finding the Fourth Proportional to 28,578.02, 39,437.24 and 15,831.16

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Solution

The fourth proportional to 28,578.02, 39,437.24 and 15,831.16 is: 21,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.02 : 39,437.24 = 15,831.16 : x
  2. Step 2: Convert to fraction form
    28,578.02/39,437.24 = 15,831.16/x
  3. Step 3: Cross multiply
    28,578.02x = 39,437.24 × 15,831.16
  4. Step 4: Simplify right side
    28,578.02x = 624,337,285.91
  5. Step 5: Solve for x
    x = 624,337,285.91/28,578.02
  6. Step 6: Final answer
    x = 21,846.77

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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.