Home / 13,639.15-18,830.37-9,397.77

Finding the Fourth Proportional to 13,639.15, 18,830.37 and 9,397.77

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Solution

The fourth proportional to 13,639.15, 18,830.37 and 9,397.77 is: 12,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.15 : 18,830.37 = 9,397.77 : x
  2. Step 2: Convert to fraction form
    13,639.15/18,830.37 = 9,397.77/x
  3. Step 3: Cross multiply
    13,639.15x = 18,830.37 × 9,397.77
  4. Step 4: Simplify right side
    13,639.15x = 176,963,486.27
  5. Step 5: Solve for x
    x = 176,963,486.27/13,639.15
  6. Step 6: Final answer
    x = 12,974.67

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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.