Home / 14,078.77-21,088.90-6,689.05

Finding the Fourth Proportional to 14,078.77, 21,088.90 and 6,689.05

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Solution

The fourth proportional to 14,078.77, 21,088.90 and 6,689.05 is: 10,019.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.77 : 21,088.90 = 6,689.05 : x
  2. Step 2: Convert to fraction form
    14,078.77/21,088.90 = 6,689.05/x
  3. Step 3: Cross multiply
    14,078.77x = 21,088.90 × 6,689.05
  4. Step 4: Simplify right side
    14,078.77x = 141,064,706.55
  5. Step 5: Solve for x
    x = 141,064,706.55/14,078.77
  6. Step 6: Final answer
    x = 10,019.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.