Home / 20,810.02-28,711.03-12,735.27

Finding the Fourth Proportional to 20,810.02, 28,711.03 and 12,735.27

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Solution

The fourth proportional to 20,810.02, 28,711.03 and 12,735.27 is: 17,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.02 : 28,711.03 = 12,735.27 : x
  2. Step 2: Convert to fraction form
    20,810.02/28,711.03 = 12,735.27/x
  3. Step 3: Cross multiply
    20,810.02x = 28,711.03 × 12,735.27
  4. Step 4: Simplify right side
    20,810.02x = 365,642,666.14
  5. Step 5: Solve for x
    x = 365,642,666.14/20,810.02
  6. Step 6: Final answer
    x = 17,570.51

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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.