Home / 28,013.08-38,659.86-15,437.80

Finding the Fourth Proportional to 28,013.08, 38,659.86 and 15,437.80

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Solution

The fourth proportional to 28,013.08, 38,659.86 and 15,437.80 is: 21,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.08 : 38,659.86 = 15,437.80 : x
  2. Step 2: Convert to fraction form
    28,013.08/38,659.86 = 15,437.80/x
  3. Step 3: Cross multiply
    28,013.08x = 38,659.86 × 15,437.80
  4. Step 4: Simplify right side
    28,013.08x = 596,823,186.71
  5. Step 5: Solve for x
    x = 596,823,186.71/28,013.08
  6. Step 6: Final answer
    x = 21,305.16

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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.