Home / 20,316.84-28,036.62-11,365.08

Finding the Fourth Proportional to 20,316.84, 28,036.62 and 11,365.08

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Solution

The fourth proportional to 20,316.84, 28,036.62 and 11,365.08 is: 15,683.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.84 : 28,036.62 = 11,365.08 : x
  2. Step 2: Convert to fraction form
    20,316.84/28,036.62 = 11,365.08/x
  3. Step 3: Cross multiply
    20,316.84x = 28,036.62 × 11,365.08
  4. Step 4: Simplify right side
    20,316.84x = 318,638,429.23
  5. Step 5: Solve for x
    x = 318,638,429.23/20,316.84
  6. Step 6: Final answer
    x = 15,683.46

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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.