Home / 21,127.02-29,155.68-12,173.01

Finding the Fourth Proportional to 21,127.02, 29,155.68 and 12,173.01

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Solution

The fourth proportional to 21,127.02, 29,155.68 and 12,173.01 is: 16,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.02 : 29,155.68 = 12,173.01 : x
  2. Step 2: Convert to fraction form
    21,127.02/29,155.68 = 12,173.01/x
  3. Step 3: Cross multiply
    21,127.02x = 29,155.68 × 12,173.01
  4. Step 4: Simplify right side
    21,127.02x = 354,912,384.20
  5. Step 5: Solve for x
    x = 354,912,384.20/21,127.02
  6. Step 6: Final answer
    x = 16,798.98

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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.