Home / 21,307.17-29,403.43-12,354.45

Finding the Fourth Proportional to 21,307.17, 29,403.43 and 12,354.45

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Solution

The fourth proportional to 21,307.17, 29,403.43 and 12,354.45 is: 17,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.17 : 29,403.43 = 12,354.45 : x
  2. Step 2: Convert to fraction form
    21,307.17/29,403.43 = 12,354.45/x
  3. Step 3: Cross multiply
    21,307.17x = 29,403.43 × 12,354.45
  4. Step 4: Simplify right side
    21,307.17x = 363,263,205.76
  5. Step 5: Solve for x
    x = 363,263,205.76/21,307.17
  6. Step 6: Final answer
    x = 17,048.87

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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.