Home / 28,466.77-39,283.56-15,719.20

Finding the Fourth Proportional to 28,466.77, 39,283.56 and 15,719.20

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Solution

The fourth proportional to 28,466.77, 39,283.56 and 15,719.20 is: 21,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.77 : 39,283.56 = 15,719.20 : x
  2. Step 2: Convert to fraction form
    28,466.77/39,283.56 = 15,719.20/x
  3. Step 3: Cross multiply
    28,466.77x = 39,283.56 × 15,719.20
  4. Step 4: Simplify right side
    28,466.77x = 617,506,333.69
  5. Step 5: Solve for x
    x = 617,506,333.69/28,466.77
  6. Step 6: Final answer
    x = 21,692.18

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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.