Home / 29,130.90-43,729.20-19,289.40

Finding the Fourth Proportional to 29,130.90, 43,729.20 and 19,289.40

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Solution

The fourth proportional to 29,130.90, 43,729.20 and 19,289.40 is: 28,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,130.90 : 43,729.20 = 19,289.40 : x
  2. Step 2: Convert to fraction form
    29,130.90/43,729.20 = 19,289.40/x
  3. Step 3: Cross multiply
    29,130.90x = 43,729.20 × 19,289.40
  4. Step 4: Simplify right side
    29,130.90x = 843,510,030.48
  5. Step 5: Solve for x
    x = 843,510,030.48/29,130.90
  6. Step 6: Final answer
    x = 28,955.85

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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.