Home / 20,008.89-30,028.13-9,478.93

Finding the Fourth Proportional to 20,008.89, 30,028.13 and 9,478.93

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Solution

The fourth proportional to 20,008.89, 30,028.13 and 9,478.93 is: 14,225.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.89 : 30,028.13 = 9,478.93 : x
  2. Step 2: Convert to fraction form
    20,008.89/30,028.13 = 9,478.93/x
  3. Step 3: Cross multiply
    20,008.89x = 30,028.13 × 9,478.93
  4. Step 4: Simplify right side
    20,008.89x = 284,634,421.13
  5. Step 5: Solve for x
    x = 284,634,421.13/20,008.89
  6. Step 6: Final answer
    x = 14,225.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.