Home / 13,649.23-18,834.40-7,680.77

Finding the Fourth Proportional to 13,649.23, 18,834.40 and 7,680.77

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Solution

The fourth proportional to 13,649.23, 18,834.40 and 7,680.77 is: 10,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.23 : 18,834.40 = 7,680.77 : x
  2. Step 2: Convert to fraction form
    13,649.23/18,834.40 = 7,680.77/x
  3. Step 3: Cross multiply
    13,649.23x = 18,834.40 × 7,680.77
  4. Step 4: Simplify right side
    13,649.23x = 144,662,694.49
  5. Step 5: Solve for x
    x = 144,662,694.49/13,649.23
  6. Step 6: Final answer
    x = 10,598.60

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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.