Home / 43,976.08-65,977.56-13,988.56

Finding the Fourth Proportional to 43,976.08, 65,977.56 and 13,988.56

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Solution

The fourth proportional to 43,976.08, 65,977.56 and 13,988.56 is: 20,987.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,976.08 : 65,977.56 = 13,988.56 : x
  2. Step 2: Convert to fraction form
    43,976.08/65,977.56 = 13,988.56/x
  3. Step 3: Cross multiply
    43,976.08x = 65,977.56 × 13,988.56
  4. Step 4: Simplify right side
    43,976.08x = 922,931,056.71
  5. Step 5: Solve for x
    x = 922,931,056.71/43,976.08
  6. Step 6: Final answer
    x = 20,987.12

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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.