Home / 28,187.40-42,276.36-9,465.32

Finding the Fourth Proportional to 28,187.40, 42,276.36 and 9,465.32

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Solution

The fourth proportional to 28,187.40, 42,276.36 and 9,465.32 is: 14,196.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.40 : 42,276.36 = 9,465.32 : x
  2. Step 2: Convert to fraction form
    28,187.40/42,276.36 = 9,465.32/x
  3. Step 3: Cross multiply
    28,187.40x = 42,276.36 × 9,465.32
  4. Step 4: Simplify right side
    28,187.40x = 400,159,275.84
  5. Step 5: Solve for x
    x = 400,159,275.84/28,187.40
  6. Step 6: Final answer
    x = 14,196.39

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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.