Home / 13,103.08-18,085.40-8,070.52

Finding the Fourth Proportional to 13,103.08, 18,085.40 and 8,070.52

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Solution

The fourth proportional to 13,103.08, 18,085.40 and 8,070.52 is: 11,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.08 : 18,085.40 = 8,070.52 : x
  2. Step 2: Convert to fraction form
    13,103.08/18,085.40 = 8,070.52/x
  3. Step 3: Cross multiply
    13,103.08x = 18,085.40 × 8,070.52
  4. Step 4: Simplify right side
    13,103.08x = 145,958,582.41
  5. Step 5: Solve for x
    x = 145,958,582.41/13,103.08
  6. Step 6: Final answer
    x = 11,139.26

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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.