Home / 20,111,780.90-30,167,671.35-18,537,140.90

Finding the Fourth Proportional to 20,111,780.90, 30,167,671.35 and 18,537,140.90

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Solution

The fourth proportional to 20,111,780.90, 30,167,671.35 and 18,537,140.90 is: 27,805,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,780.90 : 30,167,671.35 = 18,537,140.90 : x
  2. Step 2: Convert to fraction form
    20,111,780.90/30,167,671.35 = 18,537,140.90/x
  3. Step 3: Cross multiply
    20,111,780.90x = 30,167,671.35 × 18,537,140.90
  4. Step 4: Simplify right side
    20,111,780.90x = 559,222,374,439,843.19
  5. Step 5: Solve for x
    x = 559,222,374,439,843.19/20,111,780.90
  6. Step 6: Final answer
    x = 27,805,711.35

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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.