Home / 30,178.79-45,268.18-10,457.35

Finding the Fourth Proportional to 30,178.79, 45,268.18 and 10,457.35

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Solution

The fourth proportional to 30,178.79, 45,268.18 and 10,457.35 is: 15,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,178.79 : 45,268.18 = 10,457.35 : x
  2. Step 2: Convert to fraction form
    30,178.79/45,268.18 = 10,457.35/x
  3. Step 3: Cross multiply
    30,178.79x = 45,268.18 × 10,457.35
  4. Step 4: Simplify right side
    30,178.79x = 473,385,062.81
  5. Step 5: Solve for x
    x = 473,385,062.81/30,178.79
  6. Step 6: Final answer
    x = 15,686.02

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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.