Home / 20,364.77-28,104.02-11,410.22

Finding the Fourth Proportional to 20,364.77, 28,104.02 and 11,410.22

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Solution

The fourth proportional to 20,364.77, 28,104.02 and 11,410.22 is: 15,746.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.77 : 28,104.02 = 11,410.22 : x
  2. Step 2: Convert to fraction form
    20,364.77/28,104.02 = 11,410.22/x
  3. Step 3: Cross multiply
    20,364.77x = 28,104.02 × 11,410.22
  4. Step 4: Simplify right side
    20,364.77x = 320,672,853.51
  5. Step 5: Solve for x
    x = 320,672,853.51/20,364.77
  6. Step 6: Final answer
    x = 15,746.45

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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.