Home / 20,669.45-28,526.06-11,715.98

Finding the Fourth Proportional to 20,669.45, 28,526.06 and 11,715.98

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Solution

The fourth proportional to 20,669.45, 28,526.06 and 11,715.98 is: 16,169.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.45 : 28,526.06 = 11,715.98 : x
  2. Step 2: Convert to fraction form
    20,669.45/28,526.06 = 11,715.98/x
  3. Step 3: Cross multiply
    20,669.45x = 28,526.06 × 11,715.98
  4. Step 4: Simplify right side
    20,669.45x = 334,210,689.86
  5. Step 5: Solve for x
    x = 334,210,689.86/20,669.45
  6. Step 6: Final answer
    x = 16,169.31

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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.