Home / 28,140.03-38,832.77-15,564.78

Finding the Fourth Proportional to 28,140.03, 38,832.77 and 15,564.78

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Solution

The fourth proportional to 28,140.03, 38,832.77 and 15,564.78 is: 21,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.03 : 38,832.77 = 15,564.78 : x
  2. Step 2: Convert to fraction form
    28,140.03/38,832.77 = 15,564.78/x
  3. Step 3: Cross multiply
    28,140.03x = 38,832.77 × 15,564.78
  4. Step 4: Simplify right side
    28,140.03x = 604,423,444.02
  5. Step 5: Solve for x
    x = 604,423,444.02/28,140.03
  6. Step 6: Final answer
    x = 21,479.13

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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.