Home / 28,108,205.80-42,130,815.90-11,931,404.20

Finding the Fourth Proportional to 28,108,205.80, 42,130,815.90 and 11,931,404.20

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Solution

The fourth proportional to 28,108,205.80, 42,130,815.90 and 11,931,404.20 is: 17,883,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108,205.80 : 42,130,815.90 = 11,931,404.20 : x
  2. Step 2: Convert to fraction form
    28,108,205.80/42,130,815.90 = 11,931,404.20/x
  3. Step 3: Cross multiply
    28,108,205.80x = 42,130,815.90 × 11,931,404.20
  4. Step 4: Simplify right side
    28,108,205.80x = 502,679,793,778,686.75
  5. Step 5: Solve for x
    x = 502,679,793,778,686.75/28,108,205.80
  6. Step 6: Final answer
    x = 17,883,738.20

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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.