Home / 14,399.99-19,871.90-8,430.46

Finding the Fourth Proportional to 14,399.99, 19,871.90 and 8,430.46

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Solution

The fourth proportional to 14,399.99, 19,871.90 and 8,430.46 is: 11,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.99 : 19,871.90 = 8,430.46 : x
  2. Step 2: Convert to fraction form
    14,399.99/19,871.90 = 8,430.46/x
  3. Step 3: Cross multiply
    14,399.99x = 19,871.90 × 8,430.46
  4. Step 4: Simplify right side
    14,399.99x = 167,529,197.86
  5. Step 5: Solve for x
    x = 167,529,197.86/14,399.99
  6. Step 6: Final answer
    x = 11,633.98

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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.