Home / 15,870.75-21,901.64-8,798.25

Finding the Fourth Proportional to 15,870.75, 21,901.64 and 8,798.25

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Solution

The fourth proportional to 15,870.75, 21,901.64 and 8,798.25 is: 12,141.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.75 : 21,901.64 = 8,798.25 : x
  2. Step 2: Convert to fraction form
    15,870.75/21,901.64 = 8,798.25/x
  3. Step 3: Cross multiply
    15,870.75x = 21,901.64 × 8,798.25
  4. Step 4: Simplify right side
    15,870.75x = 192,696,060.14
  5. Step 5: Solve for x
    x = 192,696,060.14/15,870.75
  6. Step 6: Final answer
    x = 12,141.59

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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.