Home / 19,730.08-27,209.04-12,658.72

Finding the Fourth Proportional to 19,730.08, 27,209.04 and 12,658.72

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Solution

The fourth proportional to 19,730.08, 27,209.04 and 12,658.72 is: 17,457.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.08 : 27,209.04 = 12,658.72 : x
  2. Step 2: Convert to fraction form
    19,730.08/27,209.04 = 12,658.72/x
  3. Step 3: Cross multiply
    19,730.08x = 27,209.04 × 12,658.72
  4. Step 4: Simplify right side
    19,730.08x = 344,431,618.83
  5. Step 5: Solve for x
    x = 344,431,618.83/19,730.08
  6. Step 6: Final answer
    x = 17,457.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.