Home / 28,387.04-39,174.12-16,457.28

Finding the Fourth Proportional to 28,387.04, 39,174.12 and 16,457.28

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Solution

The fourth proportional to 28,387.04, 39,174.12 and 16,457.28 is: 22,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.04 : 39,174.12 = 16,457.28 : x
  2. Step 2: Convert to fraction form
    28,387.04/39,174.12 = 16,457.28/x
  3. Step 3: Cross multiply
    28,387.04x = 39,174.12 × 16,457.28
  4. Step 4: Simplify right side
    28,387.04x = 644,699,461.59
  5. Step 5: Solve for x
    x = 644,699,461.59/28,387.04
  6. Step 6: Final answer
    x = 22,711.05

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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.