Home / 21,267.34-29,350.63-12,315.00

Finding the Fourth Proportional to 21,267.34, 29,350.63 and 12,315.00

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Solution

The fourth proportional to 21,267.34, 29,350.63 and 12,315.00 is: 16,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.34 : 29,350.63 = 12,315.00 : x
  2. Step 2: Convert to fraction form
    21,267.34/29,350.63 = 12,315.00/x
  3. Step 3: Cross multiply
    21,267.34x = 29,350.63 × 12,315.00
  4. Step 4: Simplify right side
    21,267.34x = 361,453,099.27
  5. Step 5: Solve for x
    x = 361,453,099.27/21,267.34
  6. Step 6: Final answer
    x = 16,995.69

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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.