Home / 28,320.07-39,081.86-15,573.50

Finding the Fourth Proportional to 28,320.07, 39,081.86 and 15,573.50

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Solution

The fourth proportional to 28,320.07, 39,081.86 and 15,573.50 is: 21,491.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.07 : 39,081.86 = 15,573.50 : x
  2. Step 2: Convert to fraction form
    28,320.07/39,081.86 = 15,573.50/x
  3. Step 3: Cross multiply
    28,320.07x = 39,081.86 × 15,573.50
  4. Step 4: Simplify right side
    28,320.07x = 608,641,346.71
  5. Step 5: Solve for x
    x = 608,641,346.71/28,320.07
  6. Step 6: Final answer
    x = 21,491.52

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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.