Home / 15,734.40-21,709.08-9,766.32

Finding the Fourth Proportional to 15,734.40, 21,709.08 and 9,766.32

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Solution

The fourth proportional to 15,734.40, 21,709.08 and 9,766.32 is: 13,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,734.40 : 21,709.08 = 9,766.32 : x
  2. Step 2: Convert to fraction form
    15,734.40/21,709.08 = 9,766.32/x
  3. Step 3: Cross multiply
    15,734.40x = 21,709.08 × 9,766.32
  4. Step 4: Simplify right side
    15,734.40x = 212,017,822.19
  5. Step 5: Solve for x
    x = 212,017,822.19/15,734.40
  6. Step 6: Final answer
    x = 13,474.80

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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.