Home / 14,087.85-19,438.04-8,421.66

Finding the Fourth Proportional to 14,087.85, 19,438.04 and 8,421.66

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Solution

The fourth proportional to 14,087.85, 19,438.04 and 8,421.66 is: 11,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.85 : 19,438.04 = 8,421.66 : x
  2. Step 2: Convert to fraction form
    14,087.85/19,438.04 = 8,421.66/x
  3. Step 3: Cross multiply
    14,087.85x = 19,438.04 × 8,421.66
  4. Step 4: Simplify right side
    14,087.85x = 163,700,521.84
  5. Step 5: Solve for x
    x = 163,700,521.84/14,087.85
  6. Step 6: Final answer
    x = 11,619.98

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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.