Home / 31,510.09-47,215.88-19,798.70

Finding the Fourth Proportional to 31,510.09, 47,215.88 and 19,798.70

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Solution

The fourth proportional to 31,510.09, 47,215.88 and 19,798.70 is: 29,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,510.09 : 47,215.88 = 19,798.70 : x
  2. Step 2: Convert to fraction form
    31,510.09/47,215.88 = 19,798.70/x
  3. Step 3: Cross multiply
    31,510.09x = 47,215.88 × 19,798.70
  4. Step 4: Simplify right side
    31,510.09x = 934,813,010.64
  5. Step 5: Solve for x
    x = 934,813,010.64/31,510.09
  6. Step 6: Final answer
    x = 29,667.11

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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.