Home / 28,301.05-39,056.47-15,555.40

Finding the Fourth Proportional to 28,301.05, 39,056.47 and 15,555.40

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Solution

The fourth proportional to 28,301.05, 39,056.47 and 15,555.40 is: 21,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,301.05 : 39,056.47 = 15,555.40 : x
  2. Step 2: Convert to fraction form
    28,301.05/39,056.47 = 15,555.40/x
  3. Step 3: Cross multiply
    28,301.05x = 39,056.47 × 15,555.40
  4. Step 4: Simplify right side
    28,301.05x = 607,538,876.91
  5. Step 5: Solve for x
    x = 607,538,876.91/28,301.05
  6. Step 6: Final answer
    x = 21,467.01

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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.