Home / 28,489,890-39,316,082.76-15,437,138.80

Finding the Fourth Proportional to 28,489,890, 39,316,082.76 and 15,437,138.80

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Solution

The fourth proportional to 28,489,890, 39,316,082.76 and 15,437,138.80 is: 21,303,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489,890 : 39,316,082.76 = 15,437,138.80 : x
  2. Step 2: Convert to fraction form
    28,489,890/39,316,082.76 = 15,437,138.80/x
  3. Step 3: Cross multiply
    28,489,890x = 39,316,082.76 × 15,437,138.80
  4. Step 4: Simplify right side
    28,489,890x = 606,927,826,638,407.12
  5. Step 5: Solve for x
    x = 606,927,826,638,407.12/28,489,890
  6. Step 6: Final answer
    x = 21,303,270.27

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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.