Home / 28,030-38,681.70-15,283.08

Finding the Fourth Proportional to 28,030, 38,681.70 and 15,283.08

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Solution

The fourth proportional to 28,030, 38,681.70 and 15,283.08 is: 21,090.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030 : 38,681.70 = 15,283.08 : x
  2. Step 2: Convert to fraction form
    28,030/38,681.70 = 15,283.08/x
  3. Step 3: Cross multiply
    28,030x = 38,681.70 × 15,283.08
  4. Step 4: Simplify right side
    28,030x = 591,175,553.84
  5. Step 5: Solve for x
    x = 591,175,553.84/28,030
  6. Step 6: Final answer
    x = 21,090.82

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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.