Home / 30,210.96-45,312.75-15,430.53

Finding the Fourth Proportional to 30,210.96, 45,312.75 and 15,430.53

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Solution

The fourth proportional to 30,210.96, 45,312.75 and 15,430.53 is: 23,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.96 : 45,312.75 = 15,430.53 : x
  2. Step 2: Convert to fraction form
    30,210.96/45,312.75 = 15,430.53/x
  3. Step 3: Cross multiply
    30,210.96x = 45,312.75 × 15,430.53
  4. Step 4: Simplify right side
    30,210.96x = 699,199,748.26
  5. Step 5: Solve for x
    x = 699,199,748.26/30,210.96
  6. Step 6: Final answer
    x = 23,143.91

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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.