Home / 30,114.86-45,178.40-10,390.84

Finding the Fourth Proportional to 30,114.86, 45,178.40 and 10,390.84

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Solution

The fourth proportional to 30,114.86, 45,178.40 and 10,390.84 is: 15,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.86 : 45,178.40 = 10,390.84 : x
  2. Step 2: Convert to fraction form
    30,114.86/45,178.40 = 10,390.84/x
  3. Step 3: Cross multiply
    30,114.86x = 45,178.40 × 10,390.84
  4. Step 4: Simplify right side
    30,114.86x = 469,441,438.89
  5. Step 5: Solve for x
    x = 469,441,438.89/30,114.86
  6. Step 6: Final answer
    x = 15,588.37

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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.