Home / 19,587.20-29,359.20-10,828.40

Finding the Fourth Proportional to 19,587.20, 29,359.20 and 10,828.40

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Solution

The fourth proportional to 19,587.20, 29,359.20 and 10,828.40 is: 16,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,587.20 : 29,359.20 = 10,828.40 : x
  2. Step 2: Convert to fraction form
    19,587.20/29,359.20 = 10,828.40/x
  3. Step 3: Cross multiply
    19,587.20x = 29,359.20 × 10,828.40
  4. Step 4: Simplify right side
    19,587.20x = 317,913,161.28
  5. Step 5: Solve for x
    x = 317,913,161.28/19,587.20
  6. Step 6: Final answer
    x = 16,230.66

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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.