Home / 28,455.52-39,267.03-15,881.08

Finding the Fourth Proportional to 28,455.52, 39,267.03 and 15,881.08

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Solution

The fourth proportional to 28,455.52, 39,267.03 and 15,881.08 is: 21,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.52 : 39,267.03 = 15,881.08 : x
  2. Step 2: Convert to fraction form
    28,455.52/39,267.03 = 15,881.08/x
  3. Step 3: Cross multiply
    28,455.52x = 39,267.03 × 15,881.08
  4. Step 4: Simplify right side
    28,455.52x = 623,602,844.79
  5. Step 5: Solve for x
    x = 623,602,844.79/28,455.52
  6. Step 6: Final answer
    x = 21,915.00

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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.