Home / 19,590.36-29,374.50-6,439.20

Finding the Fourth Proportional to 19,590.36, 29,374.50 and 6,439.20

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Solution

The fourth proportional to 19,590.36, 29,374.50 and 6,439.20 is: 9,655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590.36 : 29,374.50 = 6,439.20 : x
  2. Step 2: Convert to fraction form
    19,590.36/29,374.50 = 6,439.20/x
  3. Step 3: Cross multiply
    19,590.36x = 29,374.50 × 6,439.20
  4. Step 4: Simplify right side
    19,590.36x = 189,148,280.40
  5. Step 5: Solve for x
    x = 189,148,280.40/19,590.36
  6. Step 6: Final answer
    x = 9,655.17

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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.