Home / 35,916.78-53,868.26-21,108.40

Finding the Fourth Proportional to 35,916.78, 53,868.26 and 21,108.40

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Solution

The fourth proportional to 35,916.78, 53,868.26 and 21,108.40 is: 31,658.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,916.78 : 53,868.26 = 21,108.40 : x
  2. Step 2: Convert to fraction form
    35,916.78/53,868.26 = 21,108.40/x
  3. Step 3: Cross multiply
    35,916.78x = 53,868.26 × 21,108.40
  4. Step 4: Simplify right side
    35,916.78x = 1,137,072,779.38
  5. Step 5: Solve for x
    x = 1,137,072,779.38/35,916.78
  6. Step 6: Final answer
    x = 31,658.54

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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.