Home / 31,920.04-47,888.70-11,145.16

Finding the Fourth Proportional to 31,920.04, 47,888.70 and 11,145.16

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Solution

The fourth proportional to 31,920.04, 47,888.70 and 11,145.16 is: 16,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920.04 : 47,888.70 = 11,145.16 : x
  2. Step 2: Convert to fraction form
    31,920.04/47,888.70 = 11,145.16/x
  3. Step 3: Cross multiply
    31,920.04x = 47,888.70 × 11,145.16
  4. Step 4: Simplify right side
    31,920.04x = 533,727,223.69
  5. Step 5: Solve for x
    x = 533,727,223.69/31,920.04
  6. Step 6: Final answer
    x = 16,720.76

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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.