Home / 15,512.61-21,420.33-14,386.99

Finding the Fourth Proportional to 15,512.61, 21,420.33 and 14,386.99

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Solution

The fourth proportional to 15,512.61, 21,420.33 and 14,386.99 is: 19,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.61 : 21,420.33 = 14,386.99 : x
  2. Step 2: Convert to fraction form
    15,512.61/21,420.33 = 14,386.99/x
  3. Step 3: Cross multiply
    15,512.61x = 21,420.33 × 14,386.99
  4. Step 4: Simplify right side
    15,512.61x = 308,174,073.51
  5. Step 5: Solve for x
    x = 308,174,073.51/15,512.61
  6. Step 6: Final answer
    x = 19,866.04

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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.