Home / 13,639.34-18,831.76-10,503.02

Finding the Fourth Proportional to 13,639.34, 18,831.76 and 10,503.02

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Solution

The fourth proportional to 13,639.34, 18,831.76 and 10,503.02 is: 14,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.34 : 18,831.76 = 10,503.02 : x
  2. Step 2: Convert to fraction form
    13,639.34/18,831.76 = 10,503.02/x
  3. Step 3: Cross multiply
    13,639.34x = 18,831.76 × 10,503.02
  4. Step 4: Simplify right side
    13,639.34x = 197,790,351.92
  5. Step 5: Solve for x
    x = 197,790,351.92/13,639.34
  6. Step 6: Final answer
    x = 14,501.46

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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.