Home / 31,378.86-47,074.10-10,320.06

Finding the Fourth Proportional to 31,378.86, 47,074.10 and 10,320.06

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Solution

The fourth proportional to 31,378.86, 47,074.10 and 10,320.06 is: 15,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.86 : 47,074.10 = 10,320.06 : x
  2. Step 2: Convert to fraction form
    31,378.86/47,074.10 = 10,320.06/x
  3. Step 3: Cross multiply
    31,378.86x = 47,074.10 × 10,320.06
  4. Step 4: Simplify right side
    31,378.86x = 485,807,536.45
  5. Step 5: Solve for x
    x = 485,807,536.45/31,378.86
  6. Step 6: Final answer
    x = 15,482.00

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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.