Home / 39,130.90-54,000.66-21,225.84

Finding the Fourth Proportional to 39,130.90, 54,000.66 and 21,225.84

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Solution

The fourth proportional to 39,130.90, 54,000.66 and 21,225.84 is: 29,291.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,130.90 : 54,000.66 = 21,225.84 : x
  2. Step 2: Convert to fraction form
    39,130.90/54,000.66 = 21,225.84/x
  3. Step 3: Cross multiply
    39,130.90x = 54,000.66 × 21,225.84
  4. Step 4: Simplify right side
    39,130.90x = 1,146,209,369.05
  5. Step 5: Solve for x
    x = 1,146,209,369.05/39,130.90
  6. Step 6: Final answer
    x = 29,291.67

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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.