Home / 28,303.81-39,059.35-15,558.30

Finding the Fourth Proportional to 28,303.81, 39,059.35 and 15,558.30

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Solution

The fourth proportional to 28,303.81, 39,059.35 and 15,558.30 is: 21,470.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,303.81 : 39,059.35 = 15,558.30 : x
  2. Step 2: Convert to fraction form
    28,303.81/39,059.35 = 15,558.30/x
  3. Step 3: Cross multiply
    28,303.81x = 39,059.35 × 15,558.30
  4. Step 4: Simplify right side
    28,303.81x = 607,697,156.06
  5. Step 5: Solve for x
    x = 607,697,156.06/28,303.81
  6. Step 6: Final answer
    x = 21,470.50

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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.