Home / 20,312.02-28,030.62-11,359.90

Finding the Fourth Proportional to 20,312.02, 28,030.62 and 11,359.90

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Solution

The fourth proportional to 20,312.02, 28,030.62 and 11,359.90 is: 15,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.02 : 28,030.62 = 11,359.90 : x
  2. Step 2: Convert to fraction form
    20,312.02/28,030.62 = 11,359.90/x
  3. Step 3: Cross multiply
    20,312.02x = 28,030.62 × 11,359.90
  4. Step 4: Simplify right side
    20,312.02x = 318,425,040.14
  5. Step 5: Solve for x
    x = 318,425,040.14/20,312.02
  6. Step 6: Final answer
    x = 15,676.68

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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.