Home / 12,140,117.80-18,210,176.70-9,429,768.70

Finding the Fourth Proportional to 12,140,117.80, 18,210,176.70 and 9,429,768.70

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Solution

The fourth proportional to 12,140,117.80, 18,210,176.70 and 9,429,768.70 is: 14,144,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,117.80 : 18,210,176.70 = 9,429,768.70 : x
  2. Step 2: Convert to fraction form
    12,140,117.80/18,210,176.70 = 9,429,768.70/x
  3. Step 3: Cross multiply
    12,140,117.80x = 18,210,176.70 × 9,429,768.70
  4. Step 4: Simplify right side
    12,140,117.80x = 171,717,754,267,129.28
  5. Step 5: Solve for x
    x = 171,717,754,267,129.28/12,140,117.80
  6. Step 6: Final answer
    x = 14,144,653.05

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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.