Home / 20,886.04-31,329.06-10,490.50

Finding the Fourth Proportional to 20,886.04, 31,329.06 and 10,490.50

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Solution

The fourth proportional to 20,886.04, 31,329.06 and 10,490.50 is: 15,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.04 : 31,329.06 = 10,490.50 : x
  2. Step 2: Convert to fraction form
    20,886.04/31,329.06 = 10,490.50/x
  3. Step 3: Cross multiply
    20,886.04x = 31,329.06 × 10,490.50
  4. Step 4: Simplify right side
    20,886.04x = 328,657,503.93
  5. Step 5: Solve for x
    x = 328,657,503.93/20,886.04
  6. Step 6: Final answer
    x = 15,735.75

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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.