Home / 12,045.85-18,068.67-9,415.57

Finding the Fourth Proportional to 12,045.85, 18,068.67 and 9,415.57

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Solution

The fourth proportional to 12,045.85, 18,068.67 and 9,415.57 is: 14,123.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.85 : 18,068.67 = 9,415.57 : x
  2. Step 2: Convert to fraction form
    12,045.85/18,068.67 = 9,415.57/x
  3. Step 3: Cross multiply
    12,045.85x = 18,068.67 × 9,415.57
  4. Step 4: Simplify right side
    12,045.85x = 170,126,827.19
  5. Step 5: Solve for x
    x = 170,126,827.19/12,045.85
  6. Step 6: Final answer
    x = 14,123.27

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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.