Home / 28,838.06-39,737.47-21,272.40

Finding the Fourth Proportional to 28,838.06, 39,737.47 and 21,272.40

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Solution

The fourth proportional to 28,838.06, 39,737.47 and 21,272.40 is: 29,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.06 : 39,737.47 = 21,272.40 : x
  2. Step 2: Convert to fraction form
    28,838.06/39,737.47 = 21,272.40/x
  3. Step 3: Cross multiply
    28,838.06x = 39,737.47 × 21,272.40
  4. Step 4: Simplify right side
    28,838.06x = 845,311,356.83
  5. Step 5: Solve for x
    x = 845,311,356.83/28,838.06
  6. Step 6: Final answer
    x = 29,312.35

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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.