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Finding the Fourth Proportional to 19,613.40, 29,420.10 and 10,397.40

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Solution

The fourth proportional to 19,613.40, 29,420.10 and 10,397.40 is: 15,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,613.40 : 29,420.10 = 10,397.40 : x
  2. Step 2: Convert to fraction form
    19,613.40/29,420.10 = 10,397.40/x
  3. Step 3: Cross multiply
    19,613.40x = 29,420.10 × 10,397.40
  4. Step 4: Simplify right side
    19,613.40x = 305,892,547.74
  5. Step 5: Solve for x
    x = 305,892,547.74/19,613.40
  6. Step 6: Final answer
    x = 15,596.10

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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.