Home / 13,289.40-19,934.10-13,030.20

Finding the Fourth Proportional to 13,289.40, 19,934.10 and 13,030.20

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Solution

The fourth proportional to 13,289.40, 19,934.10 and 13,030.20 is: 19,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.40 : 19,934.10 = 13,030.20 : x
  2. Step 2: Convert to fraction form
    13,289.40/19,934.10 = 13,030.20/x
  3. Step 3: Cross multiply
    13,289.40x = 19,934.10 × 13,030.20
  4. Step 4: Simplify right side
    13,289.40x = 259,745,309.82
  5. Step 5: Solve for x
    x = 259,745,309.82/13,289.40
  6. Step 6: Final answer
    x = 19,545.30

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1.5x scale

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.