Home / 28,569.08-39,425.52-15,822.68

Finding the Fourth Proportional to 28,569.08, 39,425.52 and 15,822.68

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Solution

The fourth proportional to 28,569.08, 39,425.52 and 15,822.68 is: 21,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.08 : 39,425.52 = 15,822.68 : x
  2. Step 2: Convert to fraction form
    28,569.08/39,425.52 = 15,822.68/x
  3. Step 3: Cross multiply
    28,569.08x = 39,425.52 × 15,822.68
  4. Step 4: Simplify right side
    28,569.08x = 623,817,386.79
  5. Step 5: Solve for x
    x = 623,817,386.79/28,569.08
  6. Step 6: Final answer
    x = 21,835.40

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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.