Home / 28,210.89-42,343.88-13,430.01

Finding the Fourth Proportional to 28,210.89, 42,343.88 and 13,430.01

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Solution

The fourth proportional to 28,210.89, 42,343.88 and 13,430.01 is: 20,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.89 : 42,343.88 = 13,430.01 : x
  2. Step 2: Convert to fraction form
    28,210.89/42,343.88 = 13,430.01/x
  3. Step 3: Cross multiply
    28,210.89x = 42,343.88 × 13,430.01
  4. Step 4: Simplify right side
    28,210.89x = 568,678,664.69
  5. Step 5: Solve for x
    x = 568,678,664.69/28,210.89
  6. Step 6: Final answer
    x = 20,158.13

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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.