Home / 10,421.34-14,381.81-5,705.65

Finding the Fourth Proportional to 10,421.34, 14,381.81 and 5,705.65

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Solution

The fourth proportional to 10,421.34, 14,381.81 and 5,705.65 is: 7,874.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.34 : 14,381.81 = 5,705.65 : x
  2. Step 2: Convert to fraction form
    10,421.34/14,381.81 = 5,705.65/x
  3. Step 3: Cross multiply
    10,421.34x = 14,381.81 × 5,705.65
  4. Step 4: Simplify right side
    10,421.34x = 82,057,545.70
  5. Step 5: Solve for x
    x = 82,057,545.70/10,421.34
  6. Step 6: Final answer
    x = 7,874.00

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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.