Home / 20,784.69-28,681.53-11,353.25

Finding the Fourth Proportional to 20,784.69, 28,681.53 and 11,353.25

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Solution

The fourth proportional to 20,784.69, 28,681.53 and 11,353.25 is: 15,666.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.69 : 28,681.53 = 11,353.25 : x
  2. Step 2: Convert to fraction form
    20,784.69/28,681.53 = 11,353.25/x
  3. Step 3: Cross multiply
    20,784.69x = 28,681.53 × 11,353.25
  4. Step 4: Simplify right side
    20,784.69x = 325,628,437.06
  5. Step 5: Solve for x
    x = 325,628,437.06/20,784.69
  6. Step 6: Final answer
    x = 15,666.74

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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.