Home / 21,311.07-29,386.20-14,509.50

Finding the Fourth Proportional to 21,311.07, 29,386.20 and 14,509.50

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Solution

The fourth proportional to 21,311.07, 29,386.20 and 14,509.50 is: 20,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.07 : 29,386.20 = 14,509.50 : x
  2. Step 2: Convert to fraction form
    21,311.07/29,386.20 = 14,509.50/x
  3. Step 3: Cross multiply
    21,311.07x = 29,386.20 × 14,509.50
  4. Step 4: Simplify right side
    21,311.07x = 426,379,068.90
  5. Step 5: Solve for x
    x = 426,379,068.90/21,311.07
  6. Step 6: Final answer
    x = 20,007.40

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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.