Home / 10,515.15-14,511.93-7,857.94

Finding the Fourth Proportional to 10,515.15, 14,511.93 and 7,857.94

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Solution

The fourth proportional to 10,515.15, 14,511.93 and 7,857.94 is: 10,844.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.15 : 14,511.93 = 7,857.94 : x
  2. Step 2: Convert to fraction form
    10,515.15/14,511.93 = 7,857.94/x
  3. Step 3: Cross multiply
    10,515.15x = 14,511.93 × 7,857.94
  4. Step 4: Simplify right side
    10,515.15x = 114,033,875.22
  5. Step 5: Solve for x
    x = 114,033,875.22/10,515.15
  6. Step 6: Final answer
    x = 10,844.72

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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.