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Finding the Fourth Proportional to 18,632.79, 27,929.75 and 7,547.13

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Solution

The fourth proportional to 18,632.79, 27,929.75 and 7,547.13 is: 11,312.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.79 : 27,929.75 = 7,547.13 : x
  2. Step 2: Convert to fraction form
    18,632.79/27,929.75 = 7,547.13/x
  3. Step 3: Cross multiply
    18,632.79x = 27,929.75 × 7,547.13
  4. Step 4: Simplify right side
    18,632.79x = 210,789,416.38
  5. Step 5: Solve for x
    x = 210,789,416.38/18,632.79
  6. Step 6: Final answer
    x = 11,312.82

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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.