Home / 15,916.56-23,878.71-5,387.28

Finding the Fourth Proportional to 15,916.56, 23,878.71 and 5,387.28

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Solution

The fourth proportional to 15,916.56, 23,878.71 and 5,387.28 is: 8,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.56 : 23,878.71 = 5,387.28 : x
  2. Step 2: Convert to fraction form
    15,916.56/23,878.71 = 5,387.28/x
  3. Step 3: Cross multiply
    15,916.56x = 23,878.71 × 5,387.28
  4. Step 4: Simplify right side
    15,916.56x = 128,641,296.81
  5. Step 5: Solve for x
    x = 128,641,296.81/15,916.56
  6. Step 6: Final answer
    x = 8,082.23

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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.