Home / 28,054.07-38,711.91-15,478.01

Finding the Fourth Proportional to 28,054.07, 38,711.91 and 15,478.01

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Solution

The fourth proportional to 28,054.07, 38,711.91 and 15,478.01 is: 21,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.07 : 38,711.91 = 15,478.01 : x
  2. Step 2: Convert to fraction form
    28,054.07/38,711.91 = 15,478.01/x
  3. Step 3: Cross multiply
    28,054.07x = 38,711.91 × 15,478.01
  4. Step 4: Simplify right side
    28,054.07x = 599,183,330.10
  5. Step 5: Solve for x
    x = 599,183,330.10/28,054.07
  6. Step 6: Final answer
    x = 21,358.16

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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.