Home / 28,440.09-42,626.93-21,397.49

Finding the Fourth Proportional to 28,440.09, 42,626.93 and 21,397.49

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Solution

The fourth proportional to 28,440.09, 42,626.93 and 21,397.49 is: 32,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.09 : 42,626.93 = 21,397.49 : x
  2. Step 2: Convert to fraction form
    28,440.09/42,626.93 = 21,397.49/x
  3. Step 3: Cross multiply
    28,440.09x = 42,626.93 × 21,397.49
  4. Step 4: Simplify right side
    28,440.09x = 912,109,308.41
  5. Step 5: Solve for x
    x = 912,109,308.41/28,440.09
  6. Step 6: Final answer
    x = 32,071.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.