Home / 27,657.01-38,165.43-15,720.16

Finding the Fourth Proportional to 27,657.01, 38,165.43 and 15,720.16

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Solution

The fourth proportional to 27,657.01, 38,165.43 and 15,720.16 is: 21,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,657.01 : 38,165.43 = 15,720.16 : x
  2. Step 2: Convert to fraction form
    27,657.01/38,165.43 = 15,720.16/x
  3. Step 3: Cross multiply
    27,657.01x = 38,165.43 × 15,720.16
  4. Step 4: Simplify right side
    27,657.01x = 599,966,666.07
  5. Step 5: Solve for x
    x = 599,966,666.07/27,657.01
  6. Step 6: Final answer
    x = 21,693.11

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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.