Home / 30,962.84-42,739.62-18,387.50

Finding the Fourth Proportional to 30,962.84, 42,739.62 and 18,387.50

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Solution

The fourth proportional to 30,962.84, 42,739.62 and 18,387.50 is: 25,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,962.84 : 42,739.62 = 18,387.50 : x
  2. Step 2: Convert to fraction form
    30,962.84/42,739.62 = 18,387.50/x
  3. Step 3: Cross multiply
    30,962.84x = 42,739.62 × 18,387.50
  4. Step 4: Simplify right side
    30,962.84x = 785,874,762.75
  5. Step 5: Solve for x
    x = 785,874,762.75/30,962.84
  6. Step 6: Final answer
    x = 25,381.22

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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.