Home / 30,629.63-42,273.47-18,699.91

Finding the Fourth Proportional to 30,629.63, 42,273.47 and 18,699.91

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Solution

The fourth proportional to 30,629.63, 42,273.47 and 18,699.91 is: 25,808.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.63 : 42,273.47 = 18,699.91 : x
  2. Step 2: Convert to fraction form
    30,629.63/42,273.47 = 18,699.91/x
  3. Step 3: Cross multiply
    30,629.63x = 42,273.47 × 18,699.91
  4. Step 4: Simplify right side
    30,629.63x = 790,510,025.45
  5. Step 5: Solve for x
    x = 790,510,025.45/30,629.63
  6. Step 6: Final answer
    x = 25,808.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.