Home / 13,220.05-18,242.94-10,070.77

Finding the Fourth Proportional to 13,220.05, 18,242.94 and 10,070.77

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Solution

The fourth proportional to 13,220.05, 18,242.94 and 10,070.77 is: 13,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.05 : 18,242.94 = 10,070.77 : x
  2. Step 2: Convert to fraction form
    13,220.05/18,242.94 = 10,070.77/x
  3. Step 3: Cross multiply
    13,220.05x = 18,242.94 × 10,070.77
  4. Step 4: Simplify right side
    13,220.05x = 183,720,452.86
  5. Step 5: Solve for x
    x = 183,720,452.86/13,220.05
  6. Step 6: Final answer
    x = 13,897.11

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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.