Home / 19,156.16-26,439.13-11,989.40

Finding the Fourth Proportional to 19,156.16, 26,439.13 and 11,989.40

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Solution

The fourth proportional to 19,156.16, 26,439.13 and 11,989.40 is: 16,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.16 : 26,439.13 = 11,989.40 : x
  2. Step 2: Convert to fraction form
    19,156.16/26,439.13 = 11,989.40/x
  3. Step 3: Cross multiply
    19,156.16x = 26,439.13 × 11,989.40
  4. Step 4: Simplify right side
    19,156.16x = 316,989,305.22
  5. Step 5: Solve for x
    x = 316,989,305.22/19,156.16
  6. Step 6: Final answer
    x = 16,547.64

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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.