Home / 13,275.56-19,916.75-3,915.20

Finding the Fourth Proportional to 13,275.56, 19,916.75 and 3,915.20

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Solution

The fourth proportional to 13,275.56, 19,916.75 and 3,915.20 is: 5,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.56 : 19,916.75 = 3,915.20 : x
  2. Step 2: Convert to fraction form
    13,275.56/19,916.75 = 3,915.20/x
  3. Step 3: Cross multiply
    13,275.56x = 19,916.75 × 3,915.20
  4. Step 4: Simplify right side
    13,275.56x = 77,977,955.12
  5. Step 5: Solve for x
    x = 77,977,955.12/13,275.56
  6. Step 6: Final answer
    x = 5,873.80

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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.