Home / 14,280.48-21,420.72-5,040

Finding the Fourth Proportional to 14,280.48, 21,420.72 and 5,040

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Solution

The fourth proportional to 14,280.48, 21,420.72 and 5,040 is: 7,560.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.48 : 21,420.72 = 5,040 : x
  2. Step 2: Convert to fraction form
    14,280.48/21,420.72 = 5,040/x
  3. Step 3: Cross multiply
    14,280.48x = 21,420.72 × 5,040
  4. Step 4: Simplify right side
    14,280.48x = 107,960,428.80
  5. Step 5: Solve for x
    x = 107,960,428.80/14,280.48
  6. Step 6: Final answer
    x = 7,560.00

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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.