Home / 10,306.64-15,425.40-8,457.68

Finding the Fourth Proportional to 10,306.64, 15,425.40 and 8,457.68

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Solution

The fourth proportional to 10,306.64, 15,425.40 and 8,457.68 is: 12,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,306.64 : 15,425.40 = 8,457.68 : x
  2. Step 2: Convert to fraction form
    10,306.64/15,425.40 = 8,457.68/x
  3. Step 3: Cross multiply
    10,306.64x = 15,425.40 × 8,457.68
  4. Step 4: Simplify right side
    10,306.64x = 130,463,097.07
  5. Step 5: Solve for x
    x = 130,463,097.07/10,306.64
  6. Step 6: Final answer
    x = 12,658.16

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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.