Home / 20,358,085.80-30,537,128.70-18,126,033.60

Finding the Fourth Proportional to 20,358,085.80, 30,537,128.70 and 18,126,033.60

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Solution

The fourth proportional to 20,358,085.80, 30,537,128.70 and 18,126,033.60 is: 27,189,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358,085.80 : 30,537,128.70 = 18,126,033.60 : x
  2. Step 2: Convert to fraction form
    20,358,085.80/30,537,128.70 = 18,126,033.60/x
  3. Step 3: Cross multiply
    20,358,085.80x = 30,537,128.70 × 18,126,033.60
  4. Step 4: Simplify right side
    20,358,085.80x = 553,517,020,863,724.38
  5. Step 5: Solve for x
    x = 553,517,020,863,724.38/20,358,085.80
  6. Step 6: Final answer
    x = 27,189,050.40

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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.