Home / 14,128.02-21,209.31-6,638.76

Finding the Fourth Proportional to 14,128.02, 21,209.31 and 6,638.76

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Solution

The fourth proportional to 14,128.02, 21,209.31 and 6,638.76 is: 9,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.02 : 21,209.31 = 6,638.76 : x
  2. Step 2: Convert to fraction form
    14,128.02/21,209.31 = 6,638.76/x
  3. Step 3: Cross multiply
    14,128.02x = 21,209.31 × 6,638.76
  4. Step 4: Simplify right side
    14,128.02x = 140,803,518.86
  5. Step 5: Solve for x
    x = 140,803,518.86/14,128.02
  6. Step 6: Final answer
    x = 9,966.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.