Home / 14,777.99-20,390.64-9,402.56

Finding the Fourth Proportional to 14,777.99, 20,390.64 and 9,402.56

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Solution

The fourth proportional to 14,777.99, 20,390.64 and 9,402.56 is: 12,973.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.99 : 20,390.64 = 9,402.56 : x
  2. Step 2: Convert to fraction form
    14,777.99/20,390.64 = 9,402.56/x
  3. Step 3: Cross multiply
    14,777.99x = 20,390.64 × 9,402.56
  4. Step 4: Simplify right side
    14,777.99x = 191,724,216.04
  5. Step 5: Solve for x
    x = 191,724,216.04/14,777.99
  6. Step 6: Final answer
    x = 12,973.63

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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.