Home / 13,210.45-19,816.91-4,779.07

Finding the Fourth Proportional to 13,210.45, 19,816.91 and 4,779.07

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Solution

The fourth proportional to 13,210.45, 19,816.91 and 4,779.07 is: 7,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.45 : 19,816.91 = 4,779.07 : x
  2. Step 2: Convert to fraction form
    13,210.45/19,816.91 = 4,779.07/x
  3. Step 3: Cross multiply
    13,210.45x = 19,816.91 × 4,779.07
  4. Step 4: Simplify right side
    13,210.45x = 94,706,400.07
  5. Step 5: Solve for x
    x = 94,706,400.07/13,210.45
  6. Step 6: Final answer
    x = 7,169.05

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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.