Home / 15,485.04-21,368.90-8,411.44

Finding the Fourth Proportional to 15,485.04, 21,368.90 and 8,411.44

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Solution

The fourth proportional to 15,485.04, 21,368.90 and 8,411.44 is: 11,607.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.04 : 21,368.90 = 8,411.44 : x
  2. Step 2: Convert to fraction form
    15,485.04/21,368.90 = 8,411.44/x
  3. Step 3: Cross multiply
    15,485.04x = 21,368.90 × 8,411.44
  4. Step 4: Simplify right side
    15,485.04x = 179,743,178.16
  5. Step 5: Solve for x
    x = 179,743,178.16/15,485.04
  6. Step 6: Final answer
    x = 11,607.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.