Home / 10,621.38-14,658.21-7,090.50

Finding the Fourth Proportional to 10,621.38, 14,658.21 and 7,090.50

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Solution

The fourth proportional to 10,621.38, 14,658.21 and 7,090.50 is: 9,785.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.38 : 14,658.21 = 7,090.50 : x
  2. Step 2: Convert to fraction form
    10,621.38/14,658.21 = 7,090.50/x
  3. Step 3: Cross multiply
    10,621.38x = 14,658.21 × 7,090.50
  4. Step 4: Simplify right side
    10,621.38x = 103,934,038.01
  5. Step 5: Solve for x
    x = 103,934,038.01/10,621.38
  6. Step 6: Final answer
    x = 9,785.36

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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.