Home / 28,455.36-42,683.52-9,987.84

Finding the Fourth Proportional to 28,455.36, 42,683.52 and 9,987.84

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Solution

The fourth proportional to 28,455.36, 42,683.52 and 9,987.84 is: 14,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.36 : 42,683.52 = 9,987.84 : x
  2. Step 2: Convert to fraction form
    28,455.36/42,683.52 = 9,987.84/x
  3. Step 3: Cross multiply
    28,455.36x = 42,683.52 × 9,987.84
  4. Step 4: Simplify right side
    28,455.36x = 426,316,168.40
  5. Step 5: Solve for x
    x = 426,316,168.40/28,455.36
  6. Step 6: Final answer
    x = 14,981.93

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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.