Home / 28,087.08-38,726.40-22,715.28

Finding the Fourth Proportional to 28,087.08, 38,726.40 and 22,715.28

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Solution

The fourth proportional to 28,087.08, 38,726.40 and 22,715.28 is: 31,319.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.08 : 38,726.40 = 22,715.28 : x
  2. Step 2: Convert to fraction form
    28,087.08/38,726.40 = 22,715.28/x
  3. Step 3: Cross multiply
    28,087.08x = 38,726.40 × 22,715.28
  4. Step 4: Simplify right side
    28,087.08x = 879,681,019.39
  5. Step 5: Solve for x
    x = 879,681,019.39/28,087.08
  6. Step 6: Final answer
    x = 31,319.77

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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.