Home / 10,621.28-14,656.20-6,430.16

Finding the Fourth Proportional to 10,621.28, 14,656.20 and 6,430.16

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Solution

The fourth proportional to 10,621.28, 14,656.20 and 6,430.16 is: 8,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.28 : 14,656.20 = 6,430.16 : x
  2. Step 2: Convert to fraction form
    10,621.28/14,656.20 = 6,430.16/x
  3. Step 3: Cross multiply
    10,621.28x = 14,656.20 × 6,430.16
  4. Step 4: Simplify right side
    10,621.28x = 94,241,710.99
  5. Step 5: Solve for x
    x = 94,241,710.99/10,621.28
  6. Step 6: Final answer
    x = 8,872.91

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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.