Home / 30,835.36-42,510.40-19,499.20

Finding the Fourth Proportional to 30,835.36, 42,510.40 and 19,499.20

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Solution

The fourth proportional to 30,835.36, 42,510.40 and 19,499.20 is: 26,882.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,835.36 : 42,510.40 = 19,499.20 : x
  2. Step 2: Convert to fraction form
    30,835.36/42,510.40 = 19,499.20/x
  3. Step 3: Cross multiply
    30,835.36x = 42,510.40 × 19,499.20
  4. Step 4: Simplify right side
    30,835.36x = 828,918,791.68
  5. Step 5: Solve for x
    x = 828,918,791.68/30,835.36
  6. Step 6: Final answer
    x = 26,882.09

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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.