Home / 19,398.86-29,111.05-10,639.93

Finding the Fourth Proportional to 19,398.86, 29,111.05 and 10,639.93

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Solution

The fourth proportional to 19,398.86, 29,111.05 and 10,639.93 is: 15,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.86 : 29,111.05 = 10,639.93 : x
  2. Step 2: Convert to fraction form
    19,398.86/29,111.05 = 10,639.93/x
  3. Step 3: Cross multiply
    19,398.86x = 29,111.05 × 10,639.93
  4. Step 4: Simplify right side
    19,398.86x = 309,739,534.23
  5. Step 5: Solve for x
    x = 309,739,534.23/19,398.86
  6. Step 6: Final answer
    x = 15,966.89

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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.