Home / 28,117.80-42,225.30-18,300.60

Finding the Fourth Proportional to 28,117.80, 42,225.30 and 18,300.60

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Solution

The fourth proportional to 28,117.80, 42,225.30 and 18,300.60 is: 27,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.80 : 42,225.30 = 18,300.60 : x
  2. Step 2: Convert to fraction form
    28,117.80/42,225.30 = 18,300.60/x
  3. Step 3: Cross multiply
    28,117.80x = 42,225.30 × 18,300.60
  4. Step 4: Simplify right side
    28,117.80x = 772,748,325.18
  5. Step 5: Solve for x
    x = 772,748,325.18/28,117.80
  6. Step 6: Final answer
    x = 27,482.53

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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.