Home / 22,430.70-30,951.66-12,870.06

Finding the Fourth Proportional to 22,430.70, 30,951.66 and 12,870.06

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Solution

The fourth proportional to 22,430.70, 30,951.66 and 12,870.06 is: 17,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,430.70 : 30,951.66 = 12,870.06 : x
  2. Step 2: Convert to fraction form
    22,430.70/30,951.66 = 12,870.06/x
  3. Step 3: Cross multiply
    22,430.70x = 30,951.66 × 12,870.06
  4. Step 4: Simplify right side
    22,430.70x = 398,349,721.30
  5. Step 5: Solve for x
    x = 398,349,721.30/22,430.70
  6. Step 6: Final answer
    x = 17,759.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.