Home / 28,916.10-43,374.15-21,140.10

Finding the Fourth Proportional to 28,916.10, 43,374.15 and 21,140.10

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Solution

The fourth proportional to 28,916.10, 43,374.15 and 21,140.10 is: 31,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.10 : 43,374.15 = 21,140.10 : x
  2. Step 2: Convert to fraction form
    28,916.10/43,374.15 = 21,140.10/x
  3. Step 3: Cross multiply
    28,916.10x = 43,374.15 × 21,140.10
  4. Step 4: Simplify right side
    28,916.10x = 916,933,868.42
  5. Step 5: Solve for x
    x = 916,933,868.42/28,916.10
  6. Step 6: Final answer
    x = 31,710.15

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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.