Home / 29,139.20-43,730.40-19,275.20

Finding the Fourth Proportional to 29,139.20, 43,730.40 and 19,275.20

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Solution

The fourth proportional to 29,139.20, 43,730.40 and 19,275.20 is: 28,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.20 : 43,730.40 = 19,275.20 : x
  2. Step 2: Convert to fraction form
    29,139.20/43,730.40 = 19,275.20/x
  3. Step 3: Cross multiply
    29,139.20x = 43,730.40 × 19,275.20
  4. Step 4: Simplify right side
    29,139.20x = 842,912,206.08
  5. Step 5: Solve for x
    x = 842,912,206.08/29,139.20
  6. Step 6: Final answer
    x = 28,927.09

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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.