Home / 19,119.12-26,384.88-12,407.52

Finding the Fourth Proportional to 19,119.12, 26,384.88 and 12,407.52

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Solution

The fourth proportional to 19,119.12, 26,384.88 and 12,407.52 is: 17,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.12 : 26,384.88 = 12,407.52 : x
  2. Step 2: Convert to fraction form
    19,119.12/26,384.88 = 12,407.52/x
  3. Step 3: Cross multiply
    19,119.12x = 26,384.88 × 12,407.52
  4. Step 4: Simplify right side
    19,119.12x = 327,370,926.30
  5. Step 5: Solve for x
    x = 327,370,926.30/19,119.12
  6. Step 6: Final answer
    x = 17,122.70

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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.