Home / 31,440.06-47,159.10-11,718.81

Finding the Fourth Proportional to 31,440.06, 47,159.10 and 11,718.81

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Solution

The fourth proportional to 31,440.06, 47,159.10 and 11,718.81 is: 17,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.06 : 47,159.10 = 11,718.81 : x
  2. Step 2: Convert to fraction form
    31,440.06/47,159.10 = 11,718.81/x
  3. Step 3: Cross multiply
    31,440.06x = 47,159.10 × 11,718.81
  4. Step 4: Simplify right side
    31,440.06x = 552,648,532.67
  5. Step 5: Solve for x
    x = 552,648,532.67/31,440.06
  6. Step 6: Final answer
    x = 17,577.85

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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.