Home / 28,457.16-39,271.96-15,884.34

Finding the Fourth Proportional to 28,457.16, 39,271.96 and 15,884.34

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Solution

The fourth proportional to 28,457.16, 39,271.96 and 15,884.34 is: 21,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.16 : 39,271.96 = 15,884.34 : x
  2. Step 2: Convert to fraction form
    28,457.16/39,271.96 = 15,884.34/x
  3. Step 3: Cross multiply
    28,457.16x = 39,271.96 × 15,884.34
  4. Step 4: Simplify right side
    28,457.16x = 623,809,165.11
  5. Step 5: Solve for x
    x = 623,809,165.11/28,457.16
  6. Step 6: Final answer
    x = 21,920.99

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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.