Home / 20,386.98-30,585.06-7,239.35

Finding the Fourth Proportional to 20,386.98, 30,585.06 and 7,239.35

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Solution

The fourth proportional to 20,386.98, 30,585.06 and 7,239.35 is: 10,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.98 : 30,585.06 = 7,239.35 : x
  2. Step 2: Convert to fraction form
    20,386.98/30,585.06 = 7,239.35/x
  3. Step 3: Cross multiply
    20,386.98x = 30,585.06 × 7,239.35
  4. Step 4: Simplify right side
    20,386.98x = 221,415,801.19
  5. Step 5: Solve for x
    x = 221,415,801.19/20,386.98
  6. Step 6: Final answer
    x = 10,860.65

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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.