Home / 15,831.55-21,838.02-10,454.03

Finding the Fourth Proportional to 15,831.55, 21,838.02 and 10,454.03

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Solution

The fourth proportional to 15,831.55, 21,838.02 and 10,454.03 is: 14,420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.55 : 21,838.02 = 10,454.03 : x
  2. Step 2: Convert to fraction form
    15,831.55/21,838.02 = 10,454.03/x
  3. Step 3: Cross multiply
    15,831.55x = 21,838.02 × 10,454.03
  4. Step 4: Simplify right side
    15,831.55x = 228,295,318.55
  5. Step 5: Solve for x
    x = 228,295,318.55/15,831.55
  6. Step 6: Final answer
    x = 14,420.28

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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.