Home / 13,639.16-20,442.54-10,509.32

Finding the Fourth Proportional to 13,639.16, 20,442.54 and 10,509.32

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Solution

The fourth proportional to 13,639.16, 20,442.54 and 10,509.32 is: 15,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.16 : 20,442.54 = 10,509.32 : x
  2. Step 2: Convert to fraction form
    13,639.16/20,442.54 = 10,509.32/x
  3. Step 3: Cross multiply
    13,639.16x = 20,442.54 × 10,509.32
  4. Step 4: Simplify right side
    13,639.16x = 214,837,194.47
  5. Step 5: Solve for x
    x = 214,837,194.47/13,639.16
  6. Step 6: Final answer
    x = 15,751.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.