Home / 28,158.19-38,859.53-15,582.94

Finding the Fourth Proportional to 28,158.19, 38,859.53 and 15,582.94

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Solution

The fourth proportional to 28,158.19, 38,859.53 and 15,582.94 is: 21,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.19 : 38,859.53 = 15,582.94 : x
  2. Step 2: Convert to fraction form
    28,158.19/38,859.53 = 15,582.94/x
  3. Step 3: Cross multiply
    28,158.19x = 38,859.53 × 15,582.94
  4. Step 4: Simplify right side
    28,158.19x = 605,545,549.35
  5. Step 5: Solve for x
    x = 605,545,549.35/28,158.19
  6. Step 6: Final answer
    x = 21,505.13

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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.