Home / 28,601.10-42,913.80-13,802.40

Finding the Fourth Proportional to 28,601.10, 42,913.80 and 13,802.40

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Solution

The fourth proportional to 28,601.10, 42,913.80 and 13,802.40 is: 20,709.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601.10 : 42,913.80 = 13,802.40 : x
  2. Step 2: Convert to fraction form
    28,601.10/42,913.80 = 13,802.40/x
  3. Step 3: Cross multiply
    28,601.10x = 42,913.80 × 13,802.40
  4. Step 4: Simplify right side
    28,601.10x = 592,313,433.12
  5. Step 5: Solve for x
    x = 592,313,433.12/28,601.10
  6. Step 6: Final answer
    x = 20,709.46

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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.