Home / 13,276.78-19,915.18-5,477.02

Finding the Fourth Proportional to 13,276.78, 19,915.18 and 5,477.02

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Solution

The fourth proportional to 13,276.78, 19,915.18 and 5,477.02 is: 8,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.78 : 19,915.18 = 5,477.02 : x
  2. Step 2: Convert to fraction form
    13,276.78/19,915.18 = 5,477.02/x
  3. Step 3: Cross multiply
    13,276.78x = 19,915.18 × 5,477.02
  4. Step 4: Simplify right side
    13,276.78x = 109,075,839.16
  5. Step 5: Solve for x
    x = 109,075,839.16/13,276.78
  6. Step 6: Final answer
    x = 8,215.53

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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.