Home / 10,870.40-16,305.70-5,686.40

Finding the Fourth Proportional to 10,870.40, 16,305.70 and 5,686.40

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Solution

The fourth proportional to 10,870.40, 16,305.70 and 5,686.40 is: 8,529.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,870.40 : 16,305.70 = 5,686.40 : x
  2. Step 2: Convert to fraction form
    10,870.40/16,305.70 = 5,686.40/x
  3. Step 3: Cross multiply
    10,870.40x = 16,305.70 × 5,686.40
  4. Step 4: Simplify right side
    10,870.40x = 92,720,732.48
  5. Step 5: Solve for x
    x = 92,720,732.48/10,870.40
  6. Step 6: Final answer
    x = 8,529.65

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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.