Home / 30,699.28-42,364.09-18,606.92

Finding the Fourth Proportional to 30,699.28, 42,364.09 and 18,606.92

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Solution

The fourth proportional to 30,699.28, 42,364.09 and 18,606.92 is: 25,676.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.28 : 42,364.09 = 18,606.92 : x
  2. Step 2: Convert to fraction form
    30,699.28/42,364.09 = 18,606.92/x
  3. Step 3: Cross multiply
    30,699.28x = 42,364.09 × 18,606.92
  4. Step 4: Simplify right side
    30,699.28x = 788,264,975.17
  5. Step 5: Solve for x
    x = 788,264,975.17/30,699.28
  6. Step 6: Final answer
    x = 25,676.99

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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.