Home / 30,210.04-45,314.16-17,720.47

Finding the Fourth Proportional to 30,210.04, 45,314.16 and 17,720.47

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Solution

The fourth proportional to 30,210.04, 45,314.16 and 17,720.47 is: 26,580.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.04 : 45,314.16 = 17,720.47 : x
  2. Step 2: Convert to fraction form
    30,210.04/45,314.16 = 17,720.47/x
  3. Step 3: Cross multiply
    30,210.04x = 45,314.16 × 17,720.47
  4. Step 4: Simplify right side
    30,210.04x = 802,988,212.86
  5. Step 5: Solve for x
    x = 802,988,212.86/30,210.04
  6. Step 6: Final answer
    x = 26,580.18

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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.