Home / 28,783.81-43,146.55-13,980.25

Finding the Fourth Proportional to 28,783.81, 43,146.55 and 13,980.25

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Solution

The fourth proportional to 28,783.81, 43,146.55 and 13,980.25 is: 20,956.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.81 : 43,146.55 = 13,980.25 : x
  2. Step 2: Convert to fraction form
    28,783.81/43,146.55 = 13,980.25/x
  3. Step 3: Cross multiply
    28,783.81x = 43,146.55 × 13,980.25
  4. Step 4: Simplify right side
    28,783.81x = 603,199,555.64
  5. Step 5: Solve for x
    x = 603,199,555.64/28,783.81
  6. Step 6: Final answer
    x = 20,956.21

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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.