Home / 14,280.72-19,703.43-8,315.34

Finding the Fourth Proportional to 14,280.72, 19,703.43 and 8,315.34

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Solution

The fourth proportional to 14,280.72, 19,703.43 and 8,315.34 is: 11,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.72 : 19,703.43 = 8,315.34 : x
  2. Step 2: Convert to fraction form
    14,280.72/19,703.43 = 8,315.34/x
  3. Step 3: Cross multiply
    14,280.72x = 19,703.43 × 8,315.34
  4. Step 4: Simplify right side
    14,280.72x = 163,840,719.62
  5. Step 5: Solve for x
    x = 163,840,719.62/14,280.72
  6. Step 6: Final answer
    x = 11,472.86

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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.