Home / 20,316.86-28,036.39-12,770.94

Finding the Fourth Proportional to 20,316.86, 28,036.39 and 12,770.94

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Solution

The fourth proportional to 20,316.86, 28,036.39 and 12,770.94 is: 17,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.86 : 28,036.39 = 12,770.94 : x
  2. Step 2: Convert to fraction form
    20,316.86/28,036.39 = 12,770.94/x
  3. Step 3: Cross multiply
    20,316.86x = 28,036.39 × 12,770.94
  4. Step 4: Simplify right side
    20,316.86x = 358,051,054.51
  5. Step 5: Solve for x
    x = 358,051,054.51/20,316.86
  6. Step 6: Final answer
    x = 17,623.35

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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.