Home / 10,491.38-14,478.12-5,775.68

Finding the Fourth Proportional to 10,491.38, 14,478.12 and 5,775.68

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Solution

The fourth proportional to 10,491.38, 14,478.12 and 5,775.68 is: 7,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.38 : 14,478.12 = 5,775.68 : x
  2. Step 2: Convert to fraction form
    10,491.38/14,478.12 = 5,775.68/x
  3. Step 3: Cross multiply
    10,491.38x = 14,478.12 × 5,775.68
  4. Step 4: Simplify right side
    10,491.38x = 83,620,988.12
  5. Step 5: Solve for x
    x = 83,620,988.12/10,491.38
  6. Step 6: Final answer
    x = 7,970.45

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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.