Home / 20,312.35-30,457.59-10,957.39

Finding the Fourth Proportional to 20,312.35, 30,457.59 and 10,957.39

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Solution

The fourth proportional to 20,312.35, 30,457.59 and 10,957.39 is: 16,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.35 : 30,457.59 = 10,957.39 : x
  2. Step 2: Convert to fraction form
    20,312.35/30,457.59 = 10,957.39/x
  3. Step 3: Cross multiply
    20,312.35x = 30,457.59 × 10,957.39
  4. Step 4: Simplify right side
    20,312.35x = 333,735,692.09
  5. Step 5: Solve for x
    x = 333,735,692.09/20,312.35
  6. Step 6: Final answer
    x = 16,430.19

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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.