Home / 15,875.14-21,907.75-8,705.17

Finding the Fourth Proportional to 15,875.14, 21,907.75 and 8,705.17

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Solution

The fourth proportional to 15,875.14, 21,907.75 and 8,705.17 is: 12,013.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.14 : 21,907.75 = 8,705.17 : x
  2. Step 2: Convert to fraction form
    15,875.14/21,907.75 = 8,705.17/x
  3. Step 3: Cross multiply
    15,875.14x = 21,907.75 × 8,705.17
  4. Step 4: Simplify right side
    15,875.14x = 190,710,688.07
  5. Step 5: Solve for x
    x = 190,710,688.07/15,875.14
  6. Step 6: Final answer
    x = 12,013.17

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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.