Home / 28,142.16-42,219.64-14,987.60

Finding the Fourth Proportional to 28,142.16, 42,219.64 and 14,987.60

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Solution

The fourth proportional to 28,142.16, 42,219.64 and 14,987.60 is: 22,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.16 : 42,219.64 = 14,987.60 : x
  2. Step 2: Convert to fraction form
    28,142.16/42,219.64 = 14,987.60/x
  3. Step 3: Cross multiply
    28,142.16x = 42,219.64 × 14,987.60
  4. Step 4: Simplify right side
    28,142.16x = 632,771,076.46
  5. Step 5: Solve for x
    x = 632,771,076.46/28,142.16
  6. Step 6: Final answer
    x = 22,484.81

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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.