Home / 28,143.40-38,870.94-22,497.70

Finding the Fourth Proportional to 28,143.40, 38,870.94 and 22,497.70

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Solution

The fourth proportional to 28,143.40, 38,870.94 and 22,497.70 is: 31,073.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.40 : 38,870.94 = 22,497.70 : x
  2. Step 2: Convert to fraction form
    28,143.40/38,870.94 = 22,497.70/x
  3. Step 3: Cross multiply
    28,143.40x = 38,870.94 × 22,497.70
  4. Step 4: Simplify right side
    28,143.40x = 874,506,746.84
  5. Step 5: Solve for x
    x = 874,506,746.84/28,143.40
  6. Step 6: Final answer
    x = 31,073.24

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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.