Home / 12,355.12-18,533.49-3,590.65

Finding the Fourth Proportional to 12,355.12, 18,533.49 and 3,590.65

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Solution

The fourth proportional to 12,355.12, 18,533.49 and 3,590.65 is: 5,386.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.12 : 18,533.49 = 3,590.65 : x
  2. Step 2: Convert to fraction form
    12,355.12/18,533.49 = 3,590.65/x
  3. Step 3: Cross multiply
    12,355.12x = 18,533.49 × 3,590.65
  4. Step 4: Simplify right side
    12,355.12x = 66,547,275.87
  5. Step 5: Solve for x
    x = 66,547,275.87/12,355.12
  6. Step 6: Final answer
    x = 5,386.21

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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.