Home / 10,392.85-14,341.90-5,677.15

Finding the Fourth Proportional to 10,392.85, 14,341.90 and 5,677.15

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Solution

The fourth proportional to 10,392.85, 14,341.90 and 5,677.15 is: 7,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,392.85 : 14,341.90 = 5,677.15 : x
  2. Step 2: Convert to fraction form
    10,392.85/14,341.90 = 5,677.15/x
  3. Step 3: Cross multiply
    10,392.85x = 14,341.90 × 5,677.15
  4. Step 4: Simplify right side
    10,392.85x = 81,421,117.59
  5. Step 5: Solve for x
    x = 81,421,117.59/10,392.85
  6. Step 6: Final answer
    x = 7,834.34

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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.