Home / 21,154.23-29,189.14-12,075.45

Finding the Fourth Proportional to 21,154.23, 29,189.14 and 12,075.45

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Solution

The fourth proportional to 21,154.23, 29,189.14 and 12,075.45 is: 16,662.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.23 : 29,189.14 = 12,075.45 : x
  2. Step 2: Convert to fraction form
    21,154.23/29,189.14 = 12,075.45/x
  3. Step 3: Cross multiply
    21,154.23x = 29,189.14 × 12,075.45
  4. Step 4: Simplify right side
    21,154.23x = 352,472,000.61
  5. Step 5: Solve for x
    x = 352,472,000.61/21,154.23
  6. Step 6: Final answer
    x = 16,662.01

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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.