Home / 30,130.88-45,178.09-13,487.81

Finding the Fourth Proportional to 30,130.88, 45,178.09 and 13,487.81

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Solution

The fourth proportional to 30,130.88, 45,178.09 and 13,487.81 is: 20,223.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.88 : 45,178.09 = 13,487.81 : x
  2. Step 2: Convert to fraction form
    30,130.88/45,178.09 = 13,487.81/x
  3. Step 3: Cross multiply
    30,130.88x = 45,178.09 × 13,487.81
  4. Step 4: Simplify right side
    30,130.88x = 609,353,623.89
  5. Step 5: Solve for x
    x = 609,353,623.89/30,130.88
  6. Step 6: Final answer
    x = 20,223.56

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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.