Home / 10,465.48-15,685.45-5,785.30

Finding the Fourth Proportional to 10,465.48, 15,685.45 and 5,785.30

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Solution

The fourth proportional to 10,465.48, 15,685.45 and 5,785.30 is: 8,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,465.48 : 15,685.45 = 5,785.30 : x
  2. Step 2: Convert to fraction form
    10,465.48/15,685.45 = 5,785.30/x
  3. Step 3: Cross multiply
    10,465.48x = 15,685.45 × 5,785.30
  4. Step 4: Simplify right side
    10,465.48x = 90,745,033.89
  5. Step 5: Solve for x
    x = 90,745,033.89/10,465.48
  6. Step 6: Final answer
    x = 8,670.89

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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.