Home / 28,897.20-43,345.80-17,816.40

Finding the Fourth Proportional to 28,897.20, 43,345.80 and 17,816.40

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Solution

The fourth proportional to 28,897.20, 43,345.80 and 17,816.40 is: 26,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,897.20 : 43,345.80 = 17,816.40 : x
  2. Step 2: Convert to fraction form
    28,897.20/43,345.80 = 17,816.40/x
  3. Step 3: Cross multiply
    28,897.20x = 43,345.80 × 17,816.40
  4. Step 4: Simplify right side
    28,897.20x = 772,266,111.12
  5. Step 5: Solve for x
    x = 772,266,111.12/28,897.20
  6. Step 6: Final answer
    x = 26,724.60

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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.