Home / 19,476.63-26,877.87-12,309.72

Finding the Fourth Proportional to 19,476.63, 26,877.87 and 12,309.72

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Solution

The fourth proportional to 19,476.63, 26,877.87 and 12,309.72 is: 16,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.63 : 26,877.87 = 12,309.72 : x
  2. Step 2: Convert to fraction form
    19,476.63/26,877.87 = 12,309.72/x
  3. Step 3: Cross multiply
    19,476.63x = 26,877.87 × 12,309.72
  4. Step 4: Simplify right side
    19,476.63x = 330,859,023.90
  5. Step 5: Solve for x
    x = 330,859,023.90/19,476.63
  6. Step 6: Final answer
    x = 16,987.49

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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.