Home / 14,378.90-19,825.77-12,386.06

Finding the Fourth Proportional to 14,378.90, 19,825.77 and 12,386.06

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Solution

The fourth proportional to 14,378.90, 19,825.77 and 12,386.06 is: 17,078.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.90 : 19,825.77 = 12,386.06 : x
  2. Step 2: Convert to fraction form
    14,378.90/19,825.77 = 12,386.06/x
  3. Step 3: Cross multiply
    14,378.90x = 19,825.77 × 12,386.06
  4. Step 4: Simplify right side
    14,378.90x = 245,563,176.77
  5. Step 5: Solve for x
    x = 245,563,176.77/14,378.90
  6. Step 6: Final answer
    x = 17,078.02

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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.