Home / 15,820-21,831.98-10,240.72

Finding the Fourth Proportional to 15,820, 21,831.98 and 10,240.72

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Solution

The fourth proportional to 15,820, 21,831.98 and 10,240.72 is: 14,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820 : 21,831.98 = 10,240.72 : x
  2. Step 2: Convert to fraction form
    15,820/21,831.98 = 10,240.72/x
  3. Step 3: Cross multiply
    15,820x = 21,831.98 × 10,240.72
  4. Step 4: Simplify right side
    15,820x = 223,575,194.23
  5. Step 5: Solve for x
    x = 223,575,194.23/15,820
  6. Step 6: Final answer
    x = 14,132.44

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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.