Home / 20,895.51-28,836-11,464.05

Finding the Fourth Proportional to 20,895.51, 28,836 and 11,464.05

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Solution

The fourth proportional to 20,895.51, 28,836 and 11,464.05 is: 15,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.51 : 28,836 = 11,464.05 : x
  2. Step 2: Convert to fraction form
    20,895.51/28,836 = 11,464.05/x
  3. Step 3: Cross multiply
    20,895.51x = 28,836 × 11,464.05
  4. Step 4: Simplify right side
    20,895.51x = 330,577,345.80
  5. Step 5: Solve for x
    x = 330,577,345.80/20,895.51
  6. Step 6: Final answer
    x = 15,820.50

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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.