Home / 31,516.39-47,280.20-10,457.69

Finding the Fourth Proportional to 31,516.39, 47,280.20 and 10,457.69

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Solution

The fourth proportional to 31,516.39, 47,280.20 and 10,457.69 is: 15,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.39 : 47,280.20 = 10,457.69 : x
  2. Step 2: Convert to fraction form
    31,516.39/47,280.20 = 10,457.69/x
  3. Step 3: Cross multiply
    31,516.39x = 47,280.20 × 10,457.69
  4. Step 4: Simplify right side
    31,516.39x = 494,441,674.74
  5. Step 5: Solve for x
    x = 494,441,674.74/31,516.39
  6. Step 6: Final answer
    x = 15,688.40

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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.