Home / 21,270.77-31,907.70-7,225.10

Finding the Fourth Proportional to 21,270.77, 31,907.70 and 7,225.10

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Solution

The fourth proportional to 21,270.77, 31,907.70 and 7,225.10 is: 10,838.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.77 : 31,907.70 = 7,225.10 : x
  2. Step 2: Convert to fraction form
    21,270.77/31,907.70 = 7,225.10/x
  3. Step 3: Cross multiply
    21,270.77x = 31,907.70 × 7,225.10
  4. Step 4: Simplify right side
    21,270.77x = 230,536,127.61
  5. Step 5: Solve for x
    x = 230,536,127.61/21,270.77
  6. Step 6: Final answer
    x = 10,838.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.