Home / 20,555.93-30,828.53-8,703.60

Finding the Fourth Proportional to 20,555.93, 30,828.53 and 8,703.60

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Solution

The fourth proportional to 20,555.93, 30,828.53 and 8,703.60 is: 13,053.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.93 : 30,828.53 = 8,703.60 : x
  2. Step 2: Convert to fraction form
    20,555.93/30,828.53 = 8,703.60/x
  3. Step 3: Cross multiply
    20,555.93x = 30,828.53 × 8,703.60
  4. Step 4: Simplify right side
    20,555.93x = 268,319,215.47
  5. Step 5: Solve for x
    x = 268,319,215.47/20,555.93
  6. Step 6: Final answer
    x = 13,053.13

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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.