Home / 12,210.30-16,821.27-10,071.90

Finding the Fourth Proportional to 12,210.30, 16,821.27 and 10,071.90

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Solution

The fourth proportional to 12,210.30, 16,821.27 and 10,071.90 is: 13,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.30 : 16,821.27 = 10,071.90 : x
  2. Step 2: Convert to fraction form
    12,210.30/16,821.27 = 10,071.90/x
  3. Step 3: Cross multiply
    12,210.30x = 16,821.27 × 10,071.90
  4. Step 4: Simplify right side
    12,210.30x = 169,422,149.31
  5. Step 5: Solve for x
    x = 169,422,149.31/12,210.30
  6. Step 6: Final answer
    x = 13,875.35

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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.