Home / 28,859.04-39,826.10-15,938.28

Finding the Fourth Proportional to 28,859.04, 39,826.10 and 15,938.28

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Solution

The fourth proportional to 28,859.04, 39,826.10 and 15,938.28 is: 21,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.04 : 39,826.10 = 15,938.28 : x
  2. Step 2: Convert to fraction form
    28,859.04/39,826.10 = 15,938.28/x
  3. Step 3: Cross multiply
    28,859.04x = 39,826.10 × 15,938.28
  4. Step 4: Simplify right side
    28,859.04x = 634,759,453.42
  5. Step 5: Solve for x
    x = 634,759,453.42/28,859.04
  6. Step 6: Final answer
    x = 21,995.17

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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.