Home / 14,677.40-21,990.90-6,870.20

Finding the Fourth Proportional to 14,677.40, 21,990.90 and 6,870.20

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Solution

The fourth proportional to 14,677.40, 21,990.90 and 6,870.20 is: 10,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,677.40 : 21,990.90 = 6,870.20 : x
  2. Step 2: Convert to fraction form
    14,677.40/21,990.90 = 6,870.20/x
  3. Step 3: Cross multiply
    14,677.40x = 21,990.90 × 6,870.20
  4. Step 4: Simplify right side
    14,677.40x = 151,081,881.18
  5. Step 5: Solve for x
    x = 151,081,881.18/14,677.40
  6. Step 6: Final answer
    x = 10,293.50

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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.