Home / 15,420.60-21,280.73-9,050.94

Finding the Fourth Proportional to 15,420.60, 21,280.73 and 9,050.94

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Solution

The fourth proportional to 15,420.60, 21,280.73 and 9,050.94 is: 12,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.60 : 21,280.73 = 9,050.94 : x
  2. Step 2: Convert to fraction form
    15,420.60/21,280.73 = 9,050.94/x
  3. Step 3: Cross multiply
    15,420.60x = 21,280.73 × 9,050.94
  4. Step 4: Simplify right side
    15,420.60x = 192,610,565.13
  5. Step 5: Solve for x
    x = 192,610,565.13/15,420.60
  6. Step 6: Final answer
    x = 12,490.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.