Home / 28,009.21-42,030.15-10,491.34

Finding the Fourth Proportional to 28,009.21, 42,030.15 and 10,491.34

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Solution

The fourth proportional to 28,009.21, 42,030.15 and 10,491.34 is: 15,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.21 : 42,030.15 = 10,491.34 : x
  2. Step 2: Convert to fraction form
    28,009.21/42,030.15 = 10,491.34/x
  3. Step 3: Cross multiply
    28,009.21x = 42,030.15 × 10,491.34
  4. Step 4: Simplify right side
    28,009.21x = 440,952,593.90
  5. Step 5: Solve for x
    x = 440,952,593.90/28,009.21
  6. Step 6: Final answer
    x = 15,743.13

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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.