Home / 43,603.08-65,403.22-12,438.32

Finding the Fourth Proportional to 43,603.08, 65,403.22 and 12,438.32

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Solution

The fourth proportional to 43,603.08, 65,403.22 and 12,438.32 is: 18,657.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,603.08 : 65,403.22 = 12,438.32 : x
  2. Step 2: Convert to fraction form
    43,603.08/65,403.22 = 12,438.32/x
  3. Step 3: Cross multiply
    43,603.08x = 65,403.22 × 12,438.32
  4. Step 4: Simplify right side
    43,603.08x = 813,506,179.39
  5. Step 5: Solve for x
    x = 813,506,179.39/43,603.08
  6. Step 6: Final answer
    x = 18,657.08

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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.