Home / 28,088.48-38,762.16-15,513.28

Finding the Fourth Proportional to 28,088.48, 38,762.16 and 15,513.28

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Solution

The fourth proportional to 28,088.48, 38,762.16 and 15,513.28 is: 21,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.48 : 38,762.16 = 15,513.28 : x
  2. Step 2: Convert to fraction form
    28,088.48/38,762.16 = 15,513.28/x
  3. Step 3: Cross multiply
    28,088.48x = 38,762.16 × 15,513.28
  4. Step 4: Simplify right side
    28,088.48x = 601,328,241.48
  5. Step 5: Solve for x
    x = 601,328,241.48/28,088.48
  6. Step 6: Final answer
    x = 21,408.36

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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.