Home / 10,421.10-14,366.30-6,439.95

Finding the Fourth Proportional to 10,421.10, 14,366.30 and 6,439.95

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Solution

The fourth proportional to 10,421.10, 14,366.30 and 6,439.95 is: 8,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.10 : 14,366.30 = 6,439.95 : x
  2. Step 2: Convert to fraction form
    10,421.10/14,366.30 = 6,439.95/x
  3. Step 3: Cross multiply
    10,421.10x = 14,366.30 × 6,439.95
  4. Step 4: Simplify right side
    10,421.10x = 92,518,221.49
  5. Step 5: Solve for x
    x = 92,518,221.49/10,421.10
  6. Step 6: Final answer
    x = 8,877.97

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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.