Home / 20,128,085.80-30,192,128.70-16,939,439.80

Finding the Fourth Proportional to 20,128,085.80, 30,192,128.70 and 16,939,439.80

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Solution

The fourth proportional to 20,128,085.80, 30,192,128.70 and 16,939,439.80 is: 25,409,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,085.80 : 30,192,128.70 = 16,939,439.80 : x
  2. Step 2: Convert to fraction form
    20,128,085.80/30,192,128.70 = 16,939,439.80/x
  3. Step 3: Cross multiply
    20,128,085.80x = 30,192,128.70 × 16,939,439.80
  4. Step 4: Simplify right side
    20,128,085.80x = 511,437,746,547,502.25
  5. Step 5: Solve for x
    x = 511,437,746,547,502.25/20,128,085.80
  6. Step 6: Final answer
    x = 25,409,159.70

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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.