Home / 9,421.02-12,999.72-5,643.34

Finding the Fourth Proportional to 9,421.02, 12,999.72 and 5,643.34

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Solution

The fourth proportional to 9,421.02, 12,999.72 and 5,643.34 is: 7,787.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.02 : 12,999.72 = 5,643.34 : x
  2. Step 2: Convert to fraction form
    9,421.02/12,999.72 = 5,643.34/x
  3. Step 3: Cross multiply
    9,421.02x = 12,999.72 × 5,643.34
  4. Step 4: Simplify right side
    9,421.02x = 73,361,828.53
  5. Step 5: Solve for x
    x = 73,361,828.53/9,421.02
  6. Step 6: Final answer
    x = 7,787.04

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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.