Home / 13,587.72-18,750.76-7,619.25

Finding the Fourth Proportional to 13,587.72, 18,750.76 and 7,619.25

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Solution

The fourth proportional to 13,587.72, 18,750.76 and 7,619.25 is: 10,514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.72 : 18,750.76 = 7,619.25 : x
  2. Step 2: Convert to fraction form
    13,587.72/18,750.76 = 7,619.25/x
  3. Step 3: Cross multiply
    13,587.72x = 18,750.76 × 7,619.25
  4. Step 4: Simplify right side
    13,587.72x = 142,866,779.40
  5. Step 5: Solve for x
    x = 142,866,779.40/13,587.72
  6. Step 6: Final answer
    x = 10,514.41

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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.