Home / 15,055.10-20,779.49-10,019.54

Finding the Fourth Proportional to 15,055.10, 20,779.49 and 10,019.54

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Solution

The fourth proportional to 15,055.10, 20,779.49 and 10,019.54 is: 13,829.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.10 : 20,779.49 = 10,019.54 : x
  2. Step 2: Convert to fraction form
    15,055.10/20,779.49 = 10,019.54/x
  3. Step 3: Cross multiply
    15,055.10x = 20,779.49 × 10,019.54
  4. Step 4: Simplify right side
    15,055.10x = 208,200,852.39
  5. Step 5: Solve for x
    x = 208,200,852.39/15,055.10
  6. Step 6: Final answer
    x = 13,829.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.