Home / 20,651.63-28,501.67-12,268.13

Finding the Fourth Proportional to 20,651.63, 28,501.67 and 12,268.13

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Solution

The fourth proportional to 20,651.63, 28,501.67 and 12,268.13 is: 16,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.63 : 28,501.67 = 12,268.13 : x
  2. Step 2: Convert to fraction form
    20,651.63/28,501.67 = 12,268.13/x
  3. Step 3: Cross multiply
    20,651.63x = 28,501.67 × 12,268.13
  4. Step 4: Simplify right side
    20,651.63x = 349,662,080.94
  5. Step 5: Solve for x
    x = 349,662,080.94/20,651.63
  6. Step 6: Final answer
    x = 16,931.46

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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.