Home / 20,543.36-28,347.76-11,926.56

Finding the Fourth Proportional to 20,543.36, 28,347.76 and 11,926.56

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Solution

The fourth proportional to 20,543.36, 28,347.76 and 11,926.56 is: 16,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.36 : 28,347.76 = 11,926.56 : x
  2. Step 2: Convert to fraction form
    20,543.36/28,347.76 = 11,926.56/x
  3. Step 3: Cross multiply
    20,543.36x = 28,347.76 × 11,926.56
  4. Step 4: Simplify right side
    20,543.36x = 338,091,260.51
  5. Step 5: Solve for x
    x = 338,091,260.51/20,543.36
  6. Step 6: Final answer
    x = 16,457.45

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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.