Home / 21,130.91-29,156.49-12,056.08

Finding the Fourth Proportional to 21,130.91, 29,156.49 and 12,056.08

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Solution

The fourth proportional to 21,130.91, 29,156.49 and 12,056.08 is: 16,635.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.91 : 29,156.49 = 12,056.08 : x
  2. Step 2: Convert to fraction form
    21,130.91/29,156.49 = 12,056.08/x
  3. Step 3: Cross multiply
    21,130.91x = 29,156.49 × 12,056.08
  4. Step 4: Simplify right side
    21,130.91x = 351,512,803.19
  5. Step 5: Solve for x
    x = 351,512,803.19/21,130.91
  6. Step 6: Final answer
    x = 16,635.00

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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.