Home / 19,778.16-29,681.64-13,217.04

Finding the Fourth Proportional to 19,778.16, 29,681.64 and 13,217.04

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Solution

The fourth proportional to 19,778.16, 29,681.64 and 13,217.04 is: 19,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.16 : 29,681.64 = 13,217.04 : x
  2. Step 2: Convert to fraction form
    19,778.16/29,681.64 = 13,217.04/x
  3. Step 3: Cross multiply
    19,778.16x = 29,681.64 × 13,217.04
  4. Step 4: Simplify right side
    19,778.16x = 392,303,423.15
  5. Step 5: Solve for x
    x = 392,303,423.15/19,778.16
  6. Step 6: Final answer
    x = 19,835.18

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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.