Home / 65,555.85-98,334.32-18,810.21

Finding the Fourth Proportional to 65,555.85, 98,334.32 and 18,810.21

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Solution

The fourth proportional to 65,555.85, 98,334.32 and 18,810.21 is: 28,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.85 : 98,334.32 = 18,810.21 : x
  2. Step 2: Convert to fraction form
    65,555.85/98,334.32 = 18,810.21/x
  3. Step 3: Cross multiply
    65,555.85x = 98,334.32 × 18,810.21
  4. Step 4: Simplify right side
    65,555.85x = 1,849,689,115.36
  5. Step 5: Solve for x
    x = 1,849,689,115.36/65,555.85
  6. Step 6: Final answer
    x = 28,215.47

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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.