Home / 15,875.94-21,908.09-8,705.93

Finding the Fourth Proportional to 15,875.94, 21,908.09 and 8,705.93

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Solution

The fourth proportional to 15,875.94, 21,908.09 and 8,705.93 is: 12,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.94 : 21,908.09 = 8,705.93 : x
  2. Step 2: Convert to fraction form
    15,875.94/21,908.09 = 8,705.93/x
  3. Step 3: Cross multiply
    15,875.94x = 21,908.09 × 8,705.93
  4. Step 4: Simplify right side
    15,875.94x = 190,730,210.20
  5. Step 5: Solve for x
    x = 190,730,210.20/15,875.94
  6. Step 6: Final answer
    x = 12,013.79

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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.