Home / 28,055.30-42,053.36-9,330.32

Finding the Fourth Proportional to 28,055.30, 42,053.36 and 9,330.32

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Solution

The fourth proportional to 28,055.30, 42,053.36 and 9,330.32 is: 13,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.30 : 42,053.36 = 9,330.32 : x
  2. Step 2: Convert to fraction form
    28,055.30/42,053.36 = 9,330.32/x
  3. Step 3: Cross multiply
    28,055.30x = 42,053.36 × 9,330.32
  4. Step 4: Simplify right side
    28,055.30x = 392,371,416.84
  5. Step 5: Solve for x
    x = 392,371,416.84/28,055.30
  6. Step 6: Final answer
    x = 13,985.65

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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.