Home / 12,045.63-18,068.34-9,415.35

Finding the Fourth Proportional to 12,045.63, 18,068.34 and 9,415.35

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Solution

The fourth proportional to 12,045.63, 18,068.34 and 9,415.35 is: 14,122.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.63 : 18,068.34 = 9,415.35 : x
  2. Step 2: Convert to fraction form
    12,045.63/18,068.34 = 9,415.35/x
  3. Step 3: Cross multiply
    12,045.63x = 18,068.34 × 9,415.35
  4. Step 4: Simplify right side
    12,045.63x = 170,119,654.68
  5. Step 5: Solve for x
    x = 170,119,654.68/12,045.63
  6. Step 6: Final answer
    x = 14,122.94

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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.