Home / 20,547.43-30,802.64-7,390.55

Finding the Fourth Proportional to 20,547.43, 30,802.64 and 7,390.55

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Solution

The fourth proportional to 20,547.43, 30,802.64 and 7,390.55 is: 11,079.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.43 : 30,802.64 = 7,390.55 : x
  2. Step 2: Convert to fraction form
    20,547.43/30,802.64 = 7,390.55/x
  3. Step 3: Cross multiply
    20,547.43x = 30,802.64 × 7,390.55
  4. Step 4: Simplify right side
    20,547.43x = 227,648,491.11
  5. Step 5: Solve for x
    x = 227,648,491.11/20,547.43
  6. Step 6: Final answer
    x = 11,079.17

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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.