Home / 28,030.59-42,056.01-13,989.51

Finding the Fourth Proportional to 28,030.59, 42,056.01 and 13,989.51

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Solution

The fourth proportional to 28,030.59, 42,056.01 and 13,989.51 is: 20,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.59 : 42,056.01 = 13,989.51 : x
  2. Step 2: Convert to fraction form
    28,030.59/42,056.01 = 13,989.51/x
  3. Step 3: Cross multiply
    28,030.59x = 42,056.01 × 13,989.51
  4. Step 4: Simplify right side
    28,030.59x = 588,342,972.46
  5. Step 5: Solve for x
    x = 588,342,972.46/28,030.59
  6. Step 6: Final answer
    x = 20,989.32

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1.5x scale

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.