Home / 14,392.90-21,558.10-6,981.78

Finding the Fourth Proportional to 14,392.90, 21,558.10 and 6,981.78

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Solution

The fourth proportional to 14,392.90, 21,558.10 and 6,981.78 is: 10,457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,392.90 : 21,558.10 = 6,981.78 : x
  2. Step 2: Convert to fraction form
    14,392.90/21,558.10 = 6,981.78/x
  3. Step 3: Cross multiply
    14,392.90x = 21,558.10 × 6,981.78
  4. Step 4: Simplify right side
    14,392.90x = 150,513,911.42
  5. Step 5: Solve for x
    x = 150,513,911.42/14,392.90
  6. Step 6: Final answer
    x = 10,457.51

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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.