Home / 29,130.40-43,728.45-19,288.90

Finding the Fourth Proportional to 29,130.40, 43,728.45 and 19,288.90

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Solution

The fourth proportional to 29,130.40, 43,728.45 and 19,288.90 is: 28,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,130.40 : 43,728.45 = 19,288.90 : x
  2. Step 2: Convert to fraction form
    29,130.40/43,728.45 = 19,288.90/x
  3. Step 3: Cross multiply
    29,130.40x = 43,728.45 × 19,288.90
  4. Step 4: Simplify right side
    29,130.40x = 843,473,699.21
  5. Step 5: Solve for x
    x = 843,473,699.21/29,130.40
  6. Step 6: Final answer
    x = 28,955.10

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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.