Home / 14,255.04-21,240.48-12,703.20

Finding the Fourth Proportional to 14,255.04, 21,240.48 and 12,703.20

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Solution

The fourth proportional to 14,255.04, 21,240.48 and 12,703.20 is: 18,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,255.04 : 21,240.48 = 12,703.20 : x
  2. Step 2: Convert to fraction form
    14,255.04/21,240.48 = 12,703.20/x
  3. Step 3: Cross multiply
    14,255.04x = 21,240.48 × 12,703.20
  4. Step 4: Simplify right side
    14,255.04x = 269,822,065.54
  5. Step 5: Solve for x
    x = 269,822,065.54/14,255.04
  6. Step 6: Final answer
    x = 18,928.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.