Home / 20,701,447.21-28,572,865.32-12,866,876.38

Finding the Fourth Proportional to 20,701,447.21, 28,572,865.32 and 12,866,876.38

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Solution

The fourth proportional to 20,701,447.21, 28,572,865.32 and 12,866,876.38 is: 17,759,315.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701,447.21 : 28,572,865.32 = 12,866,876.38 : x
  2. Step 2: Convert to fraction form
    20,701,447.21/28,572,865.32 = 12,866,876.38/x
  3. Step 3: Cross multiply
    20,701,447.21x = 28,572,865.32 × 12,866,876.38
  4. Step 4: Simplify right side
    20,701,447.21x = 367,643,525,894,829.19
  5. Step 5: Solve for x
    x = 367,643,525,894,829.19/20,701,447.21
  6. Step 6: Final answer
    x = 17,759,315.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.