Home / 13,139.19-19,681.38-6,545.34

Finding the Fourth Proportional to 13,139.19, 19,681.38 and 6,545.34

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Solution

The fourth proportional to 13,139.19, 19,681.38 and 6,545.34 is: 9,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.19 : 19,681.38 = 6,545.34 : x
  2. Step 2: Convert to fraction form
    13,139.19/19,681.38 = 6,545.34/x
  3. Step 3: Cross multiply
    13,139.19x = 19,681.38 × 6,545.34
  4. Step 4: Simplify right side
    13,139.19x = 128,821,323.77
  5. Step 5: Solve for x
    x = 128,821,323.77/13,139.19
  6. Step 6: Final answer
    x = 9,804.36

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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.