Home / 20,315.05-27,955.07-17,962.81

Finding the Fourth Proportional to 20,315.05, 27,955.07 and 17,962.81

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Solution

The fourth proportional to 20,315.05, 27,955.07 and 17,962.81 is: 24,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.05 : 27,955.07 = 17,962.81 : x
  2. Step 2: Convert to fraction form
    20,315.05/27,955.07 = 17,962.81/x
  3. Step 3: Cross multiply
    20,315.05x = 27,955.07 × 17,962.81
  4. Step 4: Simplify right side
    20,315.05x = 502,151,521.13
  5. Step 5: Solve for x
    x = 502,151,521.13/20,315.05
  6. Step 6: Final answer
    x = 24,718.20

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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.