Home / 30,534.64-42,141.54-18,599.72

Finding the Fourth Proportional to 30,534.64, 42,141.54 and 18,599.72

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Solution

The fourth proportional to 30,534.64, 42,141.54 and 18,599.72 is: 25,669.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,534.64 : 42,141.54 = 18,599.72 : x
  2. Step 2: Convert to fraction form
    30,534.64/42,141.54 = 18,599.72/x
  3. Step 3: Cross multiply
    30,534.64x = 42,141.54 × 18,599.72
  4. Step 4: Simplify right side
    30,534.64x = 783,820,844.37
  5. Step 5: Solve for x
    x = 783,820,844.37/30,534.64
  6. Step 6: Final answer
    x = 25,669.89

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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.