Home / 10,878.58-15,012.36-6,402.34

Finding the Fourth Proportional to 10,878.58, 15,012.36 and 6,402.34

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Solution

The fourth proportional to 10,878.58, 15,012.36 and 6,402.34 is: 8,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.58 : 15,012.36 = 6,402.34 : x
  2. Step 2: Convert to fraction form
    10,878.58/15,012.36 = 6,402.34/x
  3. Step 3: Cross multiply
    10,878.58x = 15,012.36 × 6,402.34
  4. Step 4: Simplify right side
    10,878.58x = 96,114,232.92
  5. Step 5: Solve for x
    x = 96,114,232.92/10,878.58
  6. Step 6: Final answer
    x = 8,835.18

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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.