Home / 28,478.48-42,726.86-13,688.46

Finding the Fourth Proportional to 28,478.48, 42,726.86 and 13,688.46

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Solution

The fourth proportional to 28,478.48, 42,726.86 and 13,688.46 is: 20,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.48 : 42,726.86 = 13,688.46 : x
  2. Step 2: Convert to fraction form
    28,478.48/42,726.86 = 13,688.46/x
  3. Step 3: Cross multiply
    28,478.48x = 42,726.86 × 13,688.46
  4. Step 4: Simplify right side
    28,478.48x = 584,864,914.04
  5. Step 5: Solve for x
    x = 584,864,914.04/28,478.48
  6. Step 6: Final answer
    x = 20,537.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.