Home / 21,434.40-29,576.88-12,483.36

Finding the Fourth Proportional to 21,434.40, 29,576.88 and 12,483.36

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Solution

The fourth proportional to 21,434.40, 29,576.88 and 12,483.36 is: 17,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.40 : 29,576.88 = 12,483.36 : x
  2. Step 2: Convert to fraction form
    21,434.40/29,576.88 = 12,483.36/x
  3. Step 3: Cross multiply
    21,434.40x = 29,576.88 × 12,483.36
  4. Step 4: Simplify right side
    21,434.40x = 369,218,840.72
  5. Step 5: Solve for x
    x = 369,218,840.72/21,434.40
  6. Step 6: Final answer
    x = 17,225.53

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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.