Home / 13,430.98-18,528.79-8,950.36

Finding the Fourth Proportional to 13,430.98, 18,528.79 and 8,950.36

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Solution

The fourth proportional to 13,430.98, 18,528.79 and 8,950.36 is: 12,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.98 : 18,528.79 = 8,950.36 : x
  2. Step 2: Convert to fraction form
    13,430.98/18,528.79 = 8,950.36/x
  3. Step 3: Cross multiply
    13,430.98x = 18,528.79 × 8,950.36
  4. Step 4: Simplify right side
    13,430.98x = 165,839,340.86
  5. Step 5: Solve for x
    x = 165,839,340.86/13,430.98
  6. Step 6: Final answer
    x = 12,347.52

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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.