Home / 39,280.34-58,929.74-12,985.08

Finding the Fourth Proportional to 39,280.34, 58,929.74 and 12,985.08

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Solution

The fourth proportional to 39,280.34, 58,929.74 and 12,985.08 is: 19,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.34 : 58,929.74 = 12,985.08 : x
  2. Step 2: Convert to fraction form
    39,280.34/58,929.74 = 12,985.08/x
  3. Step 3: Cross multiply
    39,280.34x = 58,929.74 × 12,985.08
  4. Step 4: Simplify right side
    39,280.34x = 765,207,323.35
  5. Step 5: Solve for x
    x = 765,207,323.35/39,280.34
  6. Step 6: Final answer
    x = 19,480.67

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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.