Home / 28,465.02-39,280.14-15,890.58

Finding the Fourth Proportional to 28,465.02, 39,280.14 and 15,890.58

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Solution

The fourth proportional to 28,465.02, 39,280.14 and 15,890.58 is: 21,928.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.02 : 39,280.14 = 15,890.58 : x
  2. Step 2: Convert to fraction form
    28,465.02/39,280.14 = 15,890.58/x
  3. Step 3: Cross multiply
    28,465.02x = 39,280.14 × 15,890.58
  4. Step 4: Simplify right side
    28,465.02x = 624,184,207.08
  5. Step 5: Solve for x
    x = 624,184,207.08/28,465.02
  6. Step 6: Final answer
    x = 21,928.11

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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.