Home / 14,079.81-21,124.40-4,720.75

Finding the Fourth Proportional to 14,079.81, 21,124.40 and 4,720.75

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Solution

The fourth proportional to 14,079.81, 21,124.40 and 4,720.75 is: 7,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.81 : 21,124.40 = 4,720.75 : x
  2. Step 2: Convert to fraction form
    14,079.81/21,124.40 = 4,720.75/x
  3. Step 3: Cross multiply
    14,079.81x = 21,124.40 × 4,720.75
  4. Step 4: Simplify right side
    14,079.81x = 99,723,011.30
  5. Step 5: Solve for x
    x = 99,723,011.30/14,079.81
  6. Step 6: Final answer
    x = 7,082.70

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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.