Home / 39,217.45-54,120.15-21,312.67

Finding the Fourth Proportional to 39,217.45, 54,120.15 and 21,312.67

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Solution

The fourth proportional to 39,217.45, 54,120.15 and 21,312.67 is: 29,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.45 : 54,120.15 = 21,312.67 : x
  2. Step 2: Convert to fraction form
    39,217.45/54,120.15 = 21,312.67/x
  3. Step 3: Cross multiply
    39,217.45x = 54,120.15 × 21,312.67
  4. Step 4: Simplify right side
    39,217.45x = 1,153,444,897.30
  5. Step 5: Solve for x
    x = 1,153,444,897.30/39,217.45
  6. Step 6: Final answer
    x = 29,411.52

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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.