Home / 28,421.64-42,619.50-18,410.04

Finding the Fourth Proportional to 28,421.64, 42,619.50 and 18,410.04

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Solution

The fourth proportional to 28,421.64, 42,619.50 and 18,410.04 is: 27,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.64 : 42,619.50 = 18,410.04 : x
  2. Step 2: Convert to fraction form
    28,421.64/42,619.50 = 18,410.04/x
  3. Step 3: Cross multiply
    28,421.64x = 42,619.50 × 18,410.04
  4. Step 4: Simplify right side
    28,421.64x = 784,626,699.78
  5. Step 5: Solve for x
    x = 784,626,699.78/28,421.64
  6. Step 6: Final answer
    x = 27,606.67

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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.