Home / 28,210.42-38,928.59-15,461.35

Finding the Fourth Proportional to 28,210.42, 38,928.59 and 15,461.35

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Solution

The fourth proportional to 28,210.42, 38,928.59 and 15,461.35 is: 21,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.42 : 38,928.59 = 15,461.35 : x
  2. Step 2: Convert to fraction form
    28,210.42/38,928.59 = 15,461.35/x
  3. Step 3: Cross multiply
    28,210.42x = 38,928.59 × 15,461.35
  4. Step 4: Simplify right side
    28,210.42x = 601,888,555.00
  5. Step 5: Solve for x
    x = 601,888,555.00/28,210.42
  6. Step 6: Final answer
    x = 21,335.68

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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.