Home / 19,143.40-26,411.78-11,587.32

Finding the Fourth Proportional to 19,143.40, 26,411.78 and 11,587.32

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Solution

The fourth proportional to 19,143.40, 26,411.78 and 11,587.32 is: 15,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.40 : 26,411.78 = 11,587.32 : x
  2. Step 2: Convert to fraction form
    19,143.40/26,411.78 = 11,587.32/x
  3. Step 3: Cross multiply
    19,143.40x = 26,411.78 × 11,587.32
  4. Step 4: Simplify right side
    19,143.40x = 306,041,746.63
  5. Step 5: Solve for x
    x = 306,041,746.63/19,143.40
  6. Step 6: Final answer
    x = 15,986.80

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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.