Home / 12,740.39-19,111.28-5,345.16

Finding the Fourth Proportional to 12,740.39, 19,111.28 and 5,345.16

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Solution

The fourth proportional to 12,740.39, 19,111.28 and 5,345.16 is: 8,018.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.39 : 19,111.28 = 5,345.16 : x
  2. Step 2: Convert to fraction form
    12,740.39/19,111.28 = 5,345.16/x
  3. Step 3: Cross multiply
    12,740.39x = 19,111.28 × 5,345.16
  4. Step 4: Simplify right side
    12,740.39x = 102,152,849.40
  5. Step 5: Solve for x
    x = 102,152,849.40/12,740.39
  6. Step 6: Final answer
    x = 8,018.03

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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.