Home / 19,389.20-29,045.40-11,574.80

Finding the Fourth Proportional to 19,389.20, 29,045.40 and 11,574.80

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Solution

The fourth proportional to 19,389.20, 29,045.40 and 11,574.80 is: 17,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.20 : 29,045.40 = 11,574.80 : x
  2. Step 2: Convert to fraction form
    19,389.20/29,045.40 = 11,574.80/x
  3. Step 3: Cross multiply
    19,389.20x = 29,045.40 × 11,574.80
  4. Step 4: Simplify right side
    19,389.20x = 336,194,695.92
  5. Step 5: Solve for x
    x = 336,194,695.92/19,389.20
  6. Step 6: Final answer
    x = 17,339.28

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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.