Home / 20,360.07-28,102.47-12,402.22

Finding the Fourth Proportional to 20,360.07, 28,102.47 and 12,402.22

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Solution

The fourth proportional to 20,360.07, 28,102.47 and 12,402.22 is: 17,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.07 : 28,102.47 = 12,402.22 : x
  2. Step 2: Convert to fraction form
    20,360.07/28,102.47 = 12,402.22/x
  3. Step 3: Cross multiply
    20,360.07x = 28,102.47 × 12,402.22
  4. Step 4: Simplify right side
    20,360.07x = 348,533,015.48
  5. Step 5: Solve for x
    x = 348,533,015.48/20,360.07
  6. Step 6: Final answer
    x = 17,118.46

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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.