Home / 19,565.40-29,345.10-6,417.78

Finding the Fourth Proportional to 19,565.40, 29,345.10 and 6,417.78

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Solution

The fourth proportional to 19,565.40, 29,345.10 and 6,417.78 is: 9,625.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,565.40 : 29,345.10 = 6,417.78 : x
  2. Step 2: Convert to fraction form
    19,565.40/29,345.10 = 6,417.78/x
  3. Step 3: Cross multiply
    19,565.40x = 29,345.10 × 6,417.78
  4. Step 4: Simplify right side
    19,565.40x = 188,330,395.88
  5. Step 5: Solve for x
    x = 188,330,395.88/19,565.40
  6. Step 6: Final answer
    x = 9,625.69

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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.