Home / 21,426.40-29,566.24-12,352.78

Finding the Fourth Proportional to 21,426.40, 29,566.24 and 12,352.78

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Solution

The fourth proportional to 21,426.40, 29,566.24 and 12,352.78 is: 17,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.40 : 29,566.24 = 12,352.78 : x
  2. Step 2: Convert to fraction form
    21,426.40/29,566.24 = 12,352.78/x
  3. Step 3: Cross multiply
    21,426.40x = 29,566.24 × 12,352.78
  4. Step 4: Simplify right side
    21,426.40x = 365,225,258.15
  5. Step 5: Solve for x
    x = 365,225,258.15/21,426.40
  6. Step 6: Final answer
    x = 17,045.57

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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.